Related Data - Mitsubishi Electric FX3U-232-BD User Manual

FX Series PLC User's Manual - Data Communication Edition
Non-Protocol Communication (RS/RS2 Instruction)

12. Related Data

12.1 Related Device List (RS Instruction)
1. Bit devices
Device
M8063 Serial communication error flag This device turns ON when a communication error occurs.
M8120 Communication setting keep
M8121 Sending wait flag
M8122 Sending request
M8123 Receiving complete flag
M8124 Carrier detection flag
*1
Time-out check flag
M8129
M8161 8-bit processing mode
R: Read only
W: Write only
R/W: Read or Write
*1. Not provided in FX
2. Word devices
Device
Error code number of serial
D8063
communication error
D8120 Communication format setting This device sets the communication format.
Remaining amount of data to
D8122
be sent
Amount of data already
D8123
received
D8124 Header
D8125 Terminator
*2
Time-out time setting
D8129
*3
Communication parameter display This device stores communication parameters set in the PLC.
D8405
*3
Operation mode display
D8419
R: Read only
W: Write only
R/W: Read or Write
*2. Not provided in FX
*3. Provided only in FX
F-90
Name
This device keeps the communication setting status (for FX
This device remains ON while the PLC is waiting to send.
When this device is set to ON by SET instruction, the PLC starts
to send.
This device turns ON when receiving is completed.
This device turns ON and OFF in synchronization with the CD signal.
This device turns ON when data receiving is suspended and the
next set of receive data is not given within the time set by the time-
out time setting device (D8129).
This device sets the send/receive data to 16-bit data or 8-bit data.
PLCs before Ver. 2.00, and FX
2N
Name
When the serial communication error flag (M8063) turns ON, this
device stores the corresponding error code.
This device stores the amount of remaining send data.
This device stores the amount of data already received.
This device sets the header (initial value: STX (H02)).
This device sets the terminator (initial value: ETX (H03)).
This device sets the time-out time.
This device stores the communication type being used.
PLCs before Ver. 2.00, and FX
2N
, FX , FX , FX
3S 3G 3GC
Description
(FX), FX , FX
2 2C
Description
(FX), FX , FX
2
2C
and FX PLCs.
3UC
3U
12 Related Data
12.1 Related Device List (RS Instruction)
PLC).
0N
PLCs.
0N
PLCs.
0N
R/W
R
W
R
R/W
R/W
R
R/W
W
R/W
R/W
R/W
R
R
R/W
R/W
R/W
R
R