Siemens SINAMICS V20 Operating Instructions Manual page 174

Communicating with the PLC
7.2 MODBUS communication
HSW (speed setpoint), HIW (actual speed), STW (control word), and ZSW (status word)
refer to control data. For more information, see parameters r2018 and P2019 in Chapter
"Parameter list (Page 179)".
Register No.
Inverter MODBUS
0 40001
1 40002
2 40003
3 40004
4 40005
5 40006
6 40007
7 40008
8 40009
9 40010
10 40011
11 40012
12 40013
13 40014
14 40015
15 40016
16 40017
17 40018
18 40019
19 40020
20 40021
21 40022
22 40023
23 40024
24 40025
25 40026
26 40027
27 40028
28 40029
29 40030
30 40031
31 40032
32 40033
33 40034
34 40035
174
Description Ac-
cess
Watchdog time R/W
Watchdog action R/W
Reference frequency R/W
Run enable R/W
Forward/reverse R/W
command
Start command R/W
Fault acknowledge- R/W
ment
PID setpoint refer- R/W
ence
PID enable R/W
Current limit R/W
Acceleration time R/W
Deceleration time R/W
(Reserved)
Digital output 1 R/W
Digital output 2 R/W
Reference frequency R/W
PID upper limit R/W
PID lower limit R/W
Proportional gain R/W
Integral gain R/W
Differential gain R/W
Feedback gain R/W
Low pass R/W
Frequency output R
Speed R
Current R
Torque R
Actual power R
Total kWh R
DC bus voltage R
Reference R
Rated power R
Voltage output R
Forward/reverse R
Stop/run R
Unit Scaling Range or On/Off
factor text
ms 1 0 - 65535
- 1 -
% 100 0.00 - 100.00
- 1 0 - 1
- 1 0 - 1
- 1 0 - 1
- 1 0 - 1
% 100 -200.0 - 200.0
- 1 0 - 1
% 10 10.0 - 400.0
s 100 0.00 - 650.0
s 100 0.00 - 650.0
- 1 HIGH
- 1 HIGH
Hz 100 1.00 - 550.00
% 100 -200.0 - 200.0
% 100 -200.0 - 200.0
- 1000 0.000 - 65.000
s 1 0 - 60
- 1 0 - 60
% 100 0.00 - 500.00
- 100 0.00 - 60.00
Hz 100 -327.68 - 327.67
RPM 1 -16250 - 16250
A 100 0 - 163.83
Nm 100 -325.00 - 325.00
kW 100 0 - 327.67
kWh 1 0 - 32767
V 1 0 - 32767
Hz 100 -327.68 - 327.67
kW 100 0 - 327.67
V 1 0 - 32767
- 1 FWD
- 1 STOP
Operating Instructions, 11/2016, A5E34559884-006
Read Write
- -
- -
HSW HSW
STW:3 STW:3
STW:11 STW:11
STW:0 STW:0
STW:7 STW:7
P2240 P2240
r0055.8 (BICO) P2200
P0640 P0640
P1120 P1120
P1121 P1121
LOW r0747.0 (BICO) P0731
LOW r0747.1 (BICO) P0732
P2000 P2000
P2291 P2291
P2292 P2292
P2280 P2280
P2285 P2285
P2274 P2274
P2269 P2269
P2265 P2265
r0024 r0024
r0022 r0022
r0027 r0027
r0031 r0031
r0032 r0032
r0039 r0039
r0026 r0026
r0020 r0020
r0206 r0206
r0025 r0025
REV ZSW:14 ZSW:14
RUN ZSW:2 ZSW:2
SINAMICS V20 Inverter