750-563 [2 AO 0/4-20mA / 6-18V DC 16 Bit] • 33
Parameter
Setting
WAGO-I/O-SYSTEM 750
I/O Modules
2.1.1.9.4.3 Write/Read Process
Request (application)
Parameter
Value
Meaning
TGL_MS
!= TGL_SM
Initiate instruction
0 Read
access
PRM_RW
1 Write
access
0
Parameter data transmission is completed with the
currently-transmitted parameter.
MORE_PRM
1
More parameter data to follow.
A0 ... A7
0 ... (n-1)
Parameter address
PRM0 ...
PRM15
0 ...65535
Parameter data write access
Response (I/O module)
Parameter
Value
Meaning
TGL_SM
== TGL_MS
Instruction completed
A0 ... A7
0 ... (n-1)
Address parameter data mirrored
0
Monitoring time not expired
TIMEOUT
1
Monitoring time expired
0
Access within the module parameter range
BUF_OFL
1
Access outside the module parameter range
0
No parameter/parameter set error
PRM_ERR
1
Parameter/parameter set error
PRM0 ...
PRM15
0 ...65535
Parameter data read access
The module uses the error flags TIMEOUT, BUF_OV and PRM_ERR to
report errors during the parameter data exchange.
After the last parameter data has been sent to the module (MORE_PRM =
FALSE), the module checks the entire parameter set and accepts it if
everything is correct. Otherwise, the module returns a parameter error
(PRM_ERR = TRUE).