Omron CQM1H-SCB41 Operation Manual page 96

Control Bits, Flags, and Status Information
Word Bits
IR 201 00 to 03 Port 1 Error Code (Transmission Error Status)
When an error occurs during transmissions for a protocol
macro, an error code will be output to these bits.
0: Normal operation1: Parity error2: Framing error
Error codes 3 to 7 are not possible for protocol macros.
These error codes are the same regardless of the serial
communications mode.
IR 20104 will also turn ON except when the error code con-
tains all zeros. SEND&RECEIVE retry processing will be
performed for any error.
If communications are recovered through protocol macro
retry processing, the error code will be cleared, but will be
maintained even if a different error occurs during the retry.
04 Port 1 Communications Error Flag
This flag turns ON when an error occurs in the communica-
tions path between the communications port and the exter-
nal device or when communications parameters are not set
correctly.
The operation of this flag is the same regardless of the
serial communications mode.
Details on the error are output as an error code to IR 20100
to IR 20103.
07 Port 1 Sequence Abort Completion Flag
This flag turns ON when a sequence has been aborted due
to ABORT in the next process or in the error process. It will
be OFF if an abort has not occurred.
08 to 11 Port 2 Error Code (Transmission Error Status)
Same as bits IR 20100 to IR 20103, but works together with
IR 20112.
12 Port 2 Communications Error Flag
Same as bits IR 2014, but works together with IR 20108 to
IR 20111.
15 Port 2 Sequence Abort Completion Flag
Save as IR 20107.
IR 202 00 to 07 Port 1 Repeat Counter PV (00 to FF hexadecimal)
The repeat counter variable N is set. The value is cleared
when the sequence execution starts.
The present value N varies according to the method used to
initialize the value. For resets, the variable N is set to 0
when the step is started, and the step is executed according
to the set number of times. For holds, the variable N for the
present value is held when the step is started, and the step
is executed according to the set number of times.
If the Repeat Counter Setting Value is set to read word
R ( ), and 0 is read, then 0 will be stored and this step will
be skipped (the next process setting will be ignored), and
the sequence will move to the next step (+1). For details,
refer to the CX-Protocol Operation Manual (W344).
IR 203 00 to 07 Port 2 Repeat Counter PV (00 to FF hexadecimal)
Same as IR 20200 to IR 20207.
Name and Function
Section 5-6
Classifi- Set
cation
Transmis- When error
sion error occurs
Sequence When
status sequence is
aborted
Transmis- When error
sion error occurs
Sequence When
status sequence is
aborted
Sequence When repeat
status count is
refreshed
Reset
Start of
sequence
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