Siemens SIMATIC S7-200 - Example of USS Instructions for Simatic FBD

Using USS Protocol Instructions to Communicate with Drives
11-21
S7-200 Programmable Controller System Manual
A5E00066097-02
FBD
MAIN (OB1)
SM0.1
USS_INIT
EN
USS
ACTIVE
19200
16#1
ERR
Q0.0
Network 1 Initialize USS Protocol
BAUD
DONE
VB1
1
SM0.0
Network 2 Control box for Drive 0
I0.0
I0.5
READ_PM
EN
XMT_REQ
DB_PTR
0
&VB20
ERR
M0.1DRIVE DONE
VB10
Network 3 Read a parameter from drive 0
I0.5
PARM5
These two contacts must be the same.
EN
RSP_R
ERR
VW4
Q0.0
Q0.1
Q0.2
Q0.3
STATUS
SPEED
RUN_EN
DIR_CW
INHIBIT
FAULT
M0.0
VB2
VD6
DRV_CTRL
RUN
OFF2
OFF3
F_ACK
DIR
I0.1
I0.2
I0.3
I0.4
DRIVE
SPD_SP
0
100.0
VAL
VW12
P
Figure 11-10 Example of USS Instructions for SIMATIC FBD