Festo VAEM-V-S8EPRS2 Operating Instructions Manual page 22

Parameterisation
Access Data
type
0x01 0x01
(write) (Uint08)
Tab. 26: Architecture of Modbus TCP: set operating mode
Example setting operating mode 2
1. Check the set operating mode using
– ASCII telegram: RU08: I9SO
– Using Modbus TCP: 0000 0000 0019 00 17 0000 0007 0000 0007 0E 00 01
0009 00 00 0000 0000 0000 0000
2. Send required operating mode, using
– ASCII telegram: WU08: I9S0V1
– Using Modbus TCP: 0000 0000 0019 00 17 0000 0007 0000 0007 0E 01 01
0009 00 00 0000 0000 0000 0001
select valve
With the system parameter [Select valve] it is possible to individually select valves for the control
process. Here it is possible to store all valves in the valve selection or to limit this to individual valves
or valve combinations (e.g. V1, V4, V5 and V7). It is also possible to query which valves are selected.
The valve selection is transferred as a decimal value originating in a binary code. Each bit of the binary
code represents a valve from right to left.
3
Fig. 12: Valve assignment in binary code
1 Valve 1
2 Valve 3
22
System Addressi
parame- ng
ters param-
index eter sub-
index
0x09 0x00
2
Transfer Example of data area Modbus TCP
value
0x00 01 01 0009 00 00 0000 0000
0x01 0000 0001
0x02
1
3 Valve 7
Festo — VAEM-V-S8EPRS2 — 2021-10a