120
(a) Operation of when an error occurs
Depending on whether the remote I/O signals of the extension I/O module are used as general-purpose I/O
signals or assigned for the external signal assignment function, the operation of the D/A converter module for
an error differs as shown in the following table.
*1 When the external signal assignment function is used, the operation of the D/A converter module is the same as that of
when the CLEAR is set for the digital output HOLD/CLEAR setting function, even if HOLD is set.
*2 When "HOLD" is set to Digital output HOLD/CLEAR setting, the Y signal of an extension digital output module is held at
the time of disconnection or CPU module STOP.
When different types of errors occur, an error is received in the following priority order.
• Major error > Moderate error > Minor error > the error at the time of Disconnecting or CPU STOP
Remote I/O signal Remote input (RX) Remote output (RY)
Digital output HOLD/CLEAR
setting function
- CLEAR HOLD
External signal assignment
function
Not
assigned
Assigned
Not
assigned
Assigned
Not
assigned
Assigned
*1
Status of the
D/A converter
module
Minor error Same as the normal operation Same as the normal operation Same as the normal operation
Moderate error Clear
Same as the
normal
operation
Clear
Same as the
normal
operation
Clear
Same as the
normal
operation
Major error Clear Clear Clear
Disconnecting
or CPU STOP
Clear
Same as the
normal
operation
Clear
Same as the
normal
operation
Hold
*2
Same as the
normal
operation