EMERSON PACSystems VersaMax MICRO PLC & NANO PLC. USER MANUAL (2019)

User Manual

Appendix A

GFK-1645M

Dec 2019

Instruction Timing

610

Group

Function

Size
(bytes)

Rel. 1.07 / 1.1 28-Point CPU with ESCP

Function Enabled

Function Disabled

Time, Range (µS)

Time, Typical (µS)

Operation Logical OR

30 - 40

Logical Exclusive OR

30 - 40

Logical Invert, NOT

Shift Bit Left

85 - 96

Shift Bit Right

Rotate Bit Left

61 - 80

Rotate Bit Right

70 - 80

Bit Position

Bit Clear

34 - 50

Bit Test

30 - 40

Bit Set

36 - 47

Mask Compare
(WORD)

80 - 109

Mask Compare
(DWORD)

70 - 106

Data Move Move (INT)

27 - 30

Move (BOOL)

40 - 55

Move (WORD)
Move (REAL)

10
13

27 - 30
40

4
4

Block Move (INT)
Block Move (WORD)
Block Move (REAL)

28
28
13

30 - 40
30 - 40
37 - 83

4
4
8

Block Clear (WORD)

37 - 65

Shift Register (BIT)

77 - 93

Shift Register (WORD) 16

55 - 83

Bit Sequencer

92 - 108

COMMREQ

470 - 485

135

Table

Array Move

INT

51 - 79

DINT

50 - 70

BOOL

70 - 96

BYTE

WORD

22
22

46 - 75
51 - 79

5
4

Search Equal

INT

46 - 60

DINT

50 - 60

BYTE

WORD

19
19

40 - 60
46 - 60

10
10

User Manual

Appendix A

GFK-1645M

Dec 2019

Instruction Timing

611

Group

Function

Size
(bytes)

Rel. 1.07 / 1.1 28-Point CPU with ESCP

Function Enabled

Function Disabled

Time, Range (µS)

Time, Typical (µS)

Search Not Equal

INT

46 - 68

DINT

69 - 75

BYTE

WORD

19
16

39 - 50
47 - 68

10
10

Search Greater
Than/Equal

INT

51 - 60

DINT

50 - 60

BYTE

WORD

19
19

42 - 60
46 - 60

10
10

Search Greater Than

INT

50 - 70

DINT

48 - 65

BYTE

WORD

19
19

50 - 61
55 - 69

10
10

Search Less Than

INT

40 - 57

DINT

50 - 75

BYTE

WORD

19
19

40 - 50
50 - 58

10
10

Search Less
Than/Equal

INT

50 - 58

DINT

50 - 60

BYTE

WORD

19
19

40 - 50
50 - 58

10
10

User Manual

Appendix A

GFK-1645M

Dec 2019

Instruction Timing

612

Group

Function

Size
(bytes)

Rel. 1.07 / 1.1 28-Point CPU with ESCP

Function Enabled

Function Disabled

Time, Range (µS)

Time, Typical (µS)

Conversion

Convert INT to REAL
Convert REAL to INT
Convert DINT to REAL
Convert REAL to DINT
Convert WORD to
REAL
Convert REAL to
WORD
Convert BDC to INT
Convert INT to BCD
Convert BCD to REAL
Truncate to INT
Truncate to DINT

10
13
13
13
10
13
10
10
10
13
13

28 - 40
495 - 537
30 - 40
496 - 534
30 - 40
490 - 506
30 - 38
80 - 124
36 - 50
132 - 142
113 - 134

4
4
4
5
3
4
4
4
4
4
4

Control

Call a Subroutine

30 - 40

Do I/O

142 - 144

Service Request

#7 (read)

#7 (set)

#14

10
10
10
10
10

46 - 50
153 - 165
384 - 387
65 - 86
97 - 125

8
6
5
7
5

#15

66 - 69

#16

#18

#23

#26,#30

#29

10
10
10
10
10

70 - 75
56 - 103
183 - 322
196 - 243
40 - 50

5
5
4
4
5

Nested MCR/ENDMCR
(combined)

40 - 50

PID-ISA Algorithm

131 - 149

PID-IND Algorithm

131 - 150

User Manual

Appendix A

GFK-1645M

Dec 2019

Instruction Timing

613

A-8

Typical Execution Times for Release 1.0 CPUs

Group

Function

Size
(bytes)

Execution Time (µsec.)

Function Enabled

Function Disabled

Nano PLC
(10 points)

Micro PLC
(14-, 23-, 28-pt)

Nano PLC
(10-points)

Micro PLC
(14-, 23-, 28-pt)

Coils/Relays

1.2ms/K

1.0ms/K

Timers

Off Delay Timer

100

On Delay Timer

100

106

Elapsed Timer

Counters

Up Counter

Down Counter

Math

Addition (INT)

Addition (DINT)
Addition (REAL)

19
17

50
119

59
127

10
10

Subtraction (INT)

Subtraction (DINT)
Subtraction (REAL)

19
17

50
119

52
128

10
10

Multiplication (INT)

Multiplication (DINT)

Multiplication (REAL)

133

137

Division (INT)

Division (DINT)
Division (REAL)

19
17

60
213

60
223

10
10

Modulo Division (INT)

Modulo Division (DINT)

Square Root (INT)

Square Root (DINT)
Square Root (REAL)

13
11

89
472

94
491

10
10

Trigonometric

SIN (REAL)
COS (REAL)
TAN (REAL)
ASIN (REAL)
ACOS (REAL)
ATAN (REAL)

11
11
11
11
11
11

1337
1342
1993
1712
1663
761

1399
1396
2077
1783
1740
795

10
10
10
10
10
10

10
10
20
10
10
10

Logarithmic

LOG (REAL)
LN (REAL)

11
11

814
760

848
790

10
10

Exponential

Power of e
Power of X

11
17

542
332

569
351

10
10

Radian
Conversion

Convert RAD to DEG
Convert DEG to RAD

11
17

289
89

300
97

10
10

Relational

Equal (INT)

Equal (DINT)
Equal (REAL)

16
14

40
50

40
52

10
10

Not Equal (INT)

User Manual

Appendix A

GFK-1645M

Dec 2019

Instruction Timing

614

Group

Function

Size
(bytes)

Execution Time (µsec.)

Function Enabled

Function Disabled

Nano PLC
(10 points)

Micro PLC
(14-, 23-, 28-pt)

Nano PLC
(10-points)

Micro PLC
(14-, 23-, 28-pt)

Not Equal (DINT)
Not Equal (REAL)

16
14

40
50

40
51

10
10

Greater Than (INT)

Greater Than (DINT)
Greater Than (REAL)

16
14

40
50

40
52

10
10

Greater Than/Equal (INT) 10

Greater Than/Equal
(DINT)
Greater Than/Equal
(REAL)

16
14

40
50

40
55

10
10

Less Than (INT)

Less Than (DINT)
Less Than (REAL)

16
14

40
50

40
59

10
10

Less Than/Equal (INT)

Less Than/Equal (DINT)
Less Than/Equal (REAL)

16
14

40
50

40
55

10
10

Range (INT)

Range (DINT)

Range (WORD)

Bit

Logical AND

Operation

Logical OR

Logical Exclusive OR

Logical Invert, NOT

Shift Bit Left

110

118

Shift Bit Right

109

Rotate Bit Left

Rotate Bit Right

Bit Position

Bit Clear

Bit Test

Bit Set

Mask Compare (WORD)

129

138

Mask Compare (DWORD) 25

128

138

Data Move

Move (INT)

Move (BOOL)

Move (WORD)
Move (REAL)

10
13

40
50

40
58

10
10

Block Move (INT)
Block Move (WORD)
Block Move (REAL)

28
28
13

50
50
99

52
52
108

10
10
10

Block Clear (WORD)

Shift Register (BIT)

118

127

User Manual

Appendix A

GFK-1645M

Dec 2019

Instruction Timing

615

Group

Function

Size
(bytes)

Execution Time (µsec.)

Function Enabled

Function Disabled

Nano PLC
(10 points)

Micro PLC
(14-, 23-, 28-pt)

Nano PLC
(10-points)

Micro PLC
(14-, 23-, 28-pt)

Shift Register (WORD)

101

109

Bit Sequencer

121

127

COMMREQ

600

590

144

155

Table

Array Move

INT

101

DINT

BOOL

127

133

BYTE

WORD

22
22

98
98

100
101

10
10

Search Equal

INT

DINT

BYTE

WORD

19
19

70
79

80
80

10
10

Search Not Equal

INT

DINT

100

BYTE

WORD

19
16

60
87

70
90

10
10

Search Greater
Than/Equal

INT

DINT

BYTE

WORD

19
19

70
79

80
80

10
10

Search Greater Than

INT

DINT

BYTE

WORD

19
19

79
80

83
89

10
10

Search Less Than

INT

DINT

BYTE

WORD

19
19

60
70

70
80

10
10

Search Less Than/Equal

INT

DINT

BYTE

WORD

19
19

60
70

70
80

10
10

User Manual

Appendix A

GFK-1645M

Dec 2019

Instruction Timing

616

Group

Function

Size
(bytes)

Execution Time (µsec.)

Function Enabled

Function Disabled

Nano PLC
(10 points)

Micro PLC
(14-, 23-, 28-pt)

Nano PLC
(10-points)

Micro PLC
(14-, 23-, 28-pt)

Conversion

Convert INT to REAL
Convert REAL to INT
Convert DINT to REAL
Convert REAL to DINT
Convert WORD to REAL
Convert REAL to WORD
Convert BDC to INT
Convert INT to BCD
Convert BCD to REAL
Truncate to INT
Truncate to DINT

10
13
13
13
10
13
10
10
10
13
13

50
50
50
611
50
583
50
156
60
169
161

51
647
59
641
51
606
50
166
70
179
173

10
10
10
10
10
10
10
10
10
10
10

Control

Call a Subroutine

Do I/O

173

185

Service Request

#7 (read)

#7 (set)

#14

10
10
10
10
10

70
163
143
107
157

71
173
150
112
167

10
10
10
10
10

10
10
10
9
10

#15

#16

#18

#23

#26,#30

#29

10
10
10
10
10

98
134
222
298
69

100
139
476
310
70

10
10
10
10
10

Nested MCR/ENDMCR
(combined)

PID-ISA Algorithm

188

194

12.8

3.2

PID-IND Algorithm

186

195

User Manual

Appendix B

GFK-1645M

Dec 2019

Feature Comparison

617

Appendix B:

Feature Comparison

Information in this appendix is arranged to provide a convenient means of comparing the
capabilities of the VersaMax Micro PLC and the Series 90 Micro PLC.

Operating Differences: Lists ways in which the VersaMax Nano and Micro PLCs operate
differently than earlier PLCs.

Program Functions Supported: This section compares the program functions supported by
VersaMax Nano PLCs and Micro PLCs with functions supported by Series 90 Micro PLCs.

Program References: Compares the program references used by VersaMax and Series 90
Micro PLCs.

B-1

Operating Differences

Subroutines are available on the VersaMax Nano and Micros. The maximum of
subroutines is 64 for Micro PLCs and 8 for Nano PLCs.

The VersaMax Nano and Micros have several functions that the Series 90 Micro did
not support.

—

PID

—

Nested JUMP, LABEL, and MCR. Use of JUMP, LABEL, and MCR functions in
Series 90 programs must be changed to nested.

—

Scaling

—

Floating point data types

—

Override capability

Word-for-word changes are not allowed by VersaMax Nano & Micro PLCs. The Series
90 Micro allowed word-for-word changes in STOP mode.

The VersaMax 14-point Micro PLCs support expansion units; the Series 90 14-point
Micro PLCs did not.

When a serial port is configured for RTU slave it will revert to SNP when a
programmer is attached.

VersaMax Nano/Micros support Serial I/O protocol.

VersaMax 20, 23, 28, 40, and 64 point units feature a time of day clock.

The VersaMax Nano and Micros support Break-free SNP communications for greater
compatibility with modems.

All VersaMax Nano/Micros support auto-configuration capability.

10.

High-Speed Counter/PWM/Pulse Train differences:

—

VersaMax Nano/Micro PLCs do not support negative edge triggering for High-
Speed Counter Preload/Strobe inputs. This is different from the Series 90 Micro
PLC.

—

VersaMax Nano/Micro PLCs have 4 PTO channels where the Series 90 Micro
PLC had 3 PTO channels.

User Manual

Appendix B

GFK-1645M

Dec 2019

Feature Comparison

618

—

VersaMax Nano/Micro PLCs output for PTO are on Q1, Q2, Q3, and Q5. While
the Series 90 Micro PLCs output PTO on Q1, Q3, Q5. Wiring changes will be
required when a VersaMax Nano/Micro is used to replace a Series 90 PLC.

—

The PTO #4 Complete bit is I511 and Start is Q511.

—

For VersaMax Micro PLCs and Nano PLCs, the  High-Speed Counter PWM and
PTO  features  use  different  %AQ  settings  than  in  the  Series  90  Micro  PLC.  A
Series 90 Micro PLC folder containing these features will not function properly
if converted directly to a VersaMax Micro PLC folder. The logic which calculates
the %AQ frequencies and/or duty cycles must be changed before being used on
a VersaMax Micro or Nano PLC. Series 90 Micro programs which used the PWM
and  PTO  features  needed  to  calculate  values  to  put  into  the  %AQ  registers,
based on the desired frequency and duty cycle.  For the VersaMax Nano and
Micro PLCs, this calculation is not necessary; the frequency and duty cycle must
be input directly into the %AQ registers.

—

Frequency limits for the VersaMax HSC/Pulse outputs have been improved

HSC
Frequency Limits

PTO/PWM
Frequency Limits

Series 90 Micro

19Hz

–

5kHz

19Hz - 2kHz

VersaMax
Nano
Micro 14- point / 28- point
Micro 20-, 40-, and 64-point

15Hz

–

10kHz

15Hz

–

10kHz

15Hz

–

100kHz

15Hz - 5kHz
15Hz - 5kHz
15Hz - 65kHz

—

For VersaMax Nano and Micro PLCs, the frequency of Pulse Train outputs can
be changed while the Pulse Train is operating. This is different from the Series
90 Micro PLC, which continues at the previous frequency until the start of the
next Pulse Train.

—

New COMMREQ for load correction value for pulse train outputs. Sets the
change (in µS) that should be applied to the duty cycle of a Pulse Train output
to compensate for the slow turn-off time of the optical isolator circuit (see
below). The range is 0 to 200µS.

35µS - DC outputs for Nano/ 14-point/ 28point;
02µS - DC outputs for Micro 64-point;
85µS relay outputs for Nano/ 14-point/ 28-point;
10µS relay outputs for micro 64-point.

—

HSC/PWM/PTO stops during Store or Clear

—

PTO/PWM use enable bits (Q0505 to Q0508). A Series 90 PLC did not use bits
to enable the PTO/PWM. These bits must be enabled for the PTO/PWM feature
to work in the VersaMax Nano/Micros.

User Manual

Appendix B

GFK-1645M

Dec 2019

Feature Comparison

619

B-2

VersaMax Nano/Micro PWM/Pulse Outputs

Operating parameters for PWM and Pulse Train outputs are specified from the application
program  by  writing  a  value  to  the  associated  %AQ  reference.  For  VersaMax  Nano/Micro
PLCs, you need only to write the desired value to the %AQ reference. Series 90 Micro PLCs
require  a  mathematical  conversion  to  determine  the  values  to  be  written  to  the  %AQ
references for PWM frequency, PWM duty cycle, and Pulse Train frequency. Therefore, these
values  will  be  incorrect  if  you  convert  a  Series  90  Micro  application  to  a  VersaMax
Nano/Micro application. You will need to change your application program so that it writes
the correct values to the %AQ references.

B-2.1

%AQ References for PWM

The frequency of the PWM output (15Hz to 5kHz for Nano/14-Point/28-Point;
15Hz

–

65kHz for 20-, 40-, and 64-Point) is specified from the application program by

writing a value to the associated Frequency register. The PWM duty cycle (0 to 100%) is
selected using the associated Duty Cycle register. The number of PWM/PTO channels
available varies according to the Nano/Micro model.

Output 1

Output 2

Output 3

Output 4

Description

AQ002

AQ004

AQ006

AQ008

PWM Frequency (15 to 5000): Nano
PWM Frequency (15 to 5000): 14-pt
PWM Frequency (15 to 5000): 28-pt
PWM Frequency (15 to 65000): 64-pt

AQ003

AQ005

AQ007

AQ009

PWM Duty Cycle (0

–

10000)

Q0505

Q0506

Q0507

Q0508

Enable Output

If you don’t know the PWM frequency and duty cycle

specified by the Series 90 Micro

application, you can calculate them from the %AQ reference values. See the formulas that
follow.

User Manual

Appendix B

GFK-1645M

Dec 2019

Feature Comparison

620

B-2.2

%AQ References for Pulse Train

The pulse frequency (15Hz to 5kHz for Nano/14-Point/28-Point; 15Hz

–

65kHz for 20-, 40-,

or 64-Point) can be controlled from the application program by writing a value to the
associated Frequency register, as shown below. The number of pulses to be output (0 to
65535) is selected using the associated Number of Pulses register. The number of PWM/PTO
channels available varies according to the Nano/Micro model.

Output 1 Output 2 Output 3 Output 4 Description

AQ123

AQ125

AQ127

AQ121

PWM Frequency (15 to 5000): Nano
PWM Frequency (15 to 5000): 14-pt
PWM Frequency (15 to 5000): 28-pt
PWM Frequency (15 to 65000): 20-/40-/64-pt

AQ124

AQ126

AQ128

AQ122

Number of pulses to send to output (0 to
65535)

Q0505

Q0506

Q0507

Q0508

Enable Output

Q0494

Q0495

Q0496

Q00511

Start Pulse Train

I0494

I0495

I0496

I00511

Pulse Train Complete

If you don’t know the pulse frequency specified by the Series 90 Micro application, you can

calculate them from the %AQ reference values .

Note:

Number of Pulses does not require conversion.

B-2.3

Enabling Outputs

The output for a channel must be enabled before its PWM or Pulse Train function can be
used. A PWM or Pulse Train output is enabled from the application program by setting its
Output Enable bit to one. The output is disabled by setting its Output Enable bit to zero.

Output 1

Output 2

Output 3

Output 4

Description

Q0505

Q0506

Q0507

Q0508

Enable Output

B-2.4

Load Correction

PWM duty cycles are configurable and Pulse-train outputs have a nominal duty cycle of 50%,
but the PLC optical isolators skew the duty cycle to something greater than 50%, depending
on temperature and loading due to the output. To compensate for this, the PLC applies load
correction to correct the pulse width (duty cycle) of each pulse. The default Load Correction
is 40µS, which approximates the correction needed for an output tied directly to an input at
50% duty cycle. The Load Correction can be changed within the range 0 to 200µS by sending
the new value in a COMMREQ.

B-2.5

Formulas for Converting Series 90 Micro Frequencies
and Duty Cycles

For additional information about these parameters, refer to the

Series 90 Micro User’s

Manual, GFK-1065.

User Manual

Appendix B

GFK-1645M

Dec 2019

Feature Comparison

621

B-3

Functions Supported

Function

VersaMax
Nano PLC, Micro PLC

Series 90
Micro PLC

Contacts

Normally Open Contact

all

Normally Closed Contact

all

Continuation Contact <+>

–

all

Coils

Normally Open Coil

all

Negated Retentive Coil

all

Negated Coil

all

Retentive Coil

all

SET Coil

all

Retentive SET Coil

all

RESET Coil

all

Retentive RESET Coil

all

Positive Transition Coil

all

Negative Transition Coil

all

Continuation Coil

–

<+>

all

Links

Horizontal link

all

Vertical link

all

Timers and Counters

Elapsed Timer

all

On-Delay Timer

all

Off-Delay Timer

all

Up Counter

all

Down Counter

all

Math

Addition

all

Addition, double precision

all

Addition, Floating Point

all

not supported

Subtraction

all

Subtraction, double precision

all

Subtraction, Floating point

all

not supported

Multiplication

all

Multiplication, double precision

all

Multiplication, floating point

all

not supported

User Manual

Appendix B

GFK-1645M

Dec 2019

Feature Comparison

622

Function

VersaMax
Nano PLC, Micro PLC

Series 90
Micro PLC

Division

all

Division, double precision

all

Division, Floating Point

all

not supported

Modulo Division

all

Modulo Division, double precision

all

Scaling

all

not supported

Square Root

all

Power of x

all

not supported

Power of e

all

not supported

Trigonometric sine

all

not supported

Trigonometric cosine

all

not supported

Trigonometric tangent

all

not supported

Inverse sine

all

not supported

Inverse cosine

all

not supported

Inverse tangent

all

not supported

Convert to Degrees

all

not supported

Convert to Radians

all

not supported

Logarithm, base 10

all

not supported

Logarithm, natural

all

not supported

Square Root, double prec.

all

Relational

Equal

all

Not Equal

all

Less Than or Equal To

all

Greater Than or Equal To

all

Less Than

all

Greater Than

all

Equal, double precision

all

Not Equal, double precision

all

Less Than or Equal To, double precision

all

Greater Than or Equal To, double precision all

all

Less Than, double precision

all

Greater Than, double precision

all

Range, signed integer

all

Range, double precision signed integer

all

Range, word

all

Range, double word

all

User Manual

Appendix B

GFK-1645M

Dec 2019

Feature Comparison

623

Function

VersaMax
Nano PLC, Micro PLC

Series 90
Micro PLC

Bit Operation

Bit Set

all

Logical AND

all

Bit Clear

all

Logical OR

all

Bit Test

all

Logical Exclusive OR

all

Bit Position

all

Logical Invert

all

Shift Left

all

Shift Right

all

Rotate Left

all

Rotate Right

all

Masked Compare, word

all

Masked Compare, double word

all

Data Move

Multiple Integer Move

all

Constant Block Move, Integer

all

Multiple Bit Move

all

Multiple Word Move

all

Constant Block Move

all

Block Clear

all

Shift Register Word

all

Shift Register Bit

all

Bit Sequencer

all

Communication Request

all

Table Functions

Search equal to

all

Search not equal to

all

Search less than

all

Search less than or equal to

all

Search greater than

all

Search greater than or equal to

all

Array move

all

Conversion

Integer to BCD

all

BCD to integer

all

User Manual

Appendix B

GFK-1645M

Dec 2019

Feature Comparison

624

Function

VersaMax
Nano PLC, Micro PLC

Series 90
Micro PLC

Control

Comment

all

End

all

no operation

all

Nested Jump

all

not supported

Non-Nested Jump

not supported

All

Nested master control relay

all

not supported

Target number for jump

all

Nested endmcr

all

not supported

Master Control Relay (non-nested)

not supported

all

End Master Control Relay (non-nested)

not supported

all

Do I/O update

all

Rel. 3.00

PID-ISA algorithm

all

PID-IND algorithm

all

Service Request

all

Drum Sequencer

all

Communication

Modbus_TCP_RW

Micro 20, 40, 64
Rel. 3.83 and later

not supported

Motion

Find Home