Festo VAEM-V-S8EPRS2 Operating Instructions Manual page 18

Parameterisation
Bit Designation Status 0
3 Reset error
message
4 ... 15 -
Tab. 17: Meanings of the bits in the control word
Access Data type
W (Write) U 16
R (Read) U16
Tab. 18: Architecture ASCII telegram control word
Access Data
type
0x01 0x02
(write) (Uint16)
0x00 0x02
(read) (Uint16)
Tab. 19: Architecture of Modbus TCP: control word
Example of use of the check word
Situation: starting all selected valves
1. Reset control word.
– Via ASCII telegram: WU16: I1S0V0
– Using Modbus TCP: 0000 0000 0019 00 17 0000 0007 0000 0007 0E 01 02
0001 00 00 0000 0000 0000 0000
2. Set bit 1 of the control word.
– Via ASCII telegram: WU16: I1S0V1
– Using Modbus TCP: 0000 0000 0019 00 17 0000 0007 0000 0007 0E 01 02
0001 00 00 0000 0000 0000 0001
Ä Start all selected valves.
statusword
The status word is used for:
– Reading the operating mode and readiness for operation
– Error status and error detection
18
Normal status
Reserved, without function
Index I Subindex S
1 0
1 0
System Addressi
parame- ng
ters param-
index eter sub-
index
0x01 0x00
0x01 0x00
Change of status 0 à 1
Stops the operation of all selected valves
and resets the active error bit in the
status word
Value V
x
-
Transfer Example of data area Modbus TCP
value
xx 01 02 0001 00 00 xxxx xxxx
xxxx xxxx
0x00 00 02 0001 00 00 0000 0000
0000 0000
Festo — VAEM-V-S8EPRS2 — 2021-10a
Example of an ASCII tele-
gram
WU16:I1S0Vx
RU16:I1S0