WAGO-I/O-SYSTEM 750
Parameterizing
63
750-636/000-x00 DC Drive Controller 24V/5A
Manual
Version 2.1.0
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8
Parameterizing
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The behavior of the I/O module is influenced by parameters. Overall, the I/O
module has 3 parameter data sets that can be switched to. Parameters are changed
via the parameter channel. The parameter channel uses register communication
(see ch. "Parameterize" > "Parameter Data Sets", "Parameter Channel" and
"Register Communication").
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8.1
Register Communication
Some I/O modules of the 750 series offer a protocol subsequently referred to as
"register communication" for the configuration. Register communication provides
read and/or write access to up to 64 data words designated as "registers" of the
respective I/O module. This protocol allows, for example, data exchange between
the I/O module 750-636/000-x00 (DC Drive Controller 24V/5A) and a PLC
application.
Register communication of the I/O module 750-636/000-x00 (DC Drive
Controller 24V/5A) is not a permanent part of the process image, but may be
mapped as required. If mapped, the process image is only available for register
communication, i.e. no other data can be transmitted.
If bit 7 is set in the control byte of the process image of the outputs, it is viewed as
a request to the I/O module to map register communication. The I/O module
responds to the request by setting bit 7 in the status byte. Register communication
is thus considered mapped.
No access to process data during register communication!
During register communication, process data cannot be accessed! Resulting
process data that may be displayed will be invalid!
All register communication processes follow the request/response principle:
1.
A request is made in the process image of the outputs (PAA). This can be
generated by a PLC application, for example.
2.
The I/O module generates a response in the process image of the inputs
(PAE).
There is a request when the value of control byte REG_C of register
communication changes compared to the previous status or register
communication is remapped. If write access is involved, the I/O module also
processes the REG_D0 and REG_D1 bytes of the PAA as a new value for the
respective register.
There is a response when the value of the REG_S status byte or D0 or D1 bytes
change in the PAE compared to the previous status. If it involves read access in