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Parameterizing
WAGO-I/O-SYSTEM 750
750-636/000-x00 DC Drive Controller 24V/5A
Manual
Version 2.1.0
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8.4
Process of Parameter Transmission
Parameter data exchange between the application and I/O module is made via
request/response process. The application initiates an instruction using the toggle
bit (TGL_MS != TGL_SM). Afterward, the application queries the
communication control register (R57) of the I/O module until the I/O module
confirms execution of the instruction (TGL_SM == TGL_MS).
The possible instructions to the parameterization interface of the I/O module are
listed in below:
Read/Write Parameters (Module-Specific)
Request (Application)
Parameters
Value
Description
TGL_MS
!= TGL_SM
Enter instruction
PRM_RW
= FALSE
Read access
= TRUE
Write access
MORE_PRM
= FALSE
Parameter data transmission is completed.
= TRUE
More parameter data follows
A0 … A7
0 … (n-1)
Parameter address
PRM0 … PRM15
0 … 65535
Parameter data write access
Response (I/O Module)
Parameters
Value
Description
TGL_MS
= = TGL_SM
Instruction completed
A0 … A7
0 … (n-1)
Address parameter data mirrored
TIMEOUT
FALSE, TRUE Monitoring time expired
BUF_OFL
FALSE, TRUE Access outside the I/O module parameter
range
PRM_ERR
FALSE, TRUE Parameter/parameter set error
PRM0 … PRM15
0 … 65535
Parameter data read access
The I/O 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 I/O module (MORE_PRM =
FALSE), the I/O module checks the entire parameter set and accepts it if
everything is correct. Otherwise, the I/O modules returns parameterization errors
(PRM_ERR = TRUE).
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