User Manual

Table Of Contents
54 I/O Modules
Special Modules
WAGO-I/O-SYSTEM 750
I/O Modules
Parameter Value
range
Description
A0 … A7 0 ...255 Word address of the parameter to be read/written.
TGL_MS FALSE,
TRUE
Toggle bit to release new instructions from the application to
the module. If TGL_SM and TGL_MS have the same status,
no new instruction has been released yet. If the flags have
different statuses, a new instruction has been released and is
currently being processed.
FALSE Parameter data of A7…A0 are read PRM_RW
TRUE Parameter data are written to A7…A0
FALSE End of parameter transmission MORE_PRM
TRUE More parameter data to follow
TGL_SM FALSE,
TRUE
Toggle bit indicating that a parameter sent by the module has
been transferred. If TGL_SM and TGL_MS have different
statuses, the corresponding instruction is processed by the
module. If both flags have the same status, the instruction for
the parameter that was sent or requested is completed.
FALSE The transmission of the parameters has been completed
within the stipulated time (parameter address 0).
TIMEOUT
TRUE The maximum time for the transmission of the parameters
between I/O module and application was exceeded.
FALSE Access to the write or read buffer of the module was ap-
proved.
BUF_OVF
TRUE Parameters outside the write or read buffer have been ac-
cessed.
FALSE The parameter/all parameters previously transmitted are
valid.
PRM_ERR
TRUE At least one transmitted parameter was defective. The flag
can either be set after each parameter that is received or after
the transmission of the parameters is completed.
RES FALSE Reserved for expansions