Operation Mode Display [D8419] - Mitsubishi Electric FX3U-232-BD User Manual

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

12.2.16 Operation mode display [D8419]

This device stores the communication type being used.
1. Detailed contents
This device stores the code of the communication type currently being used by the communication port.
The table below shows the contents of the codes.
Code
0
1
2
3
4
5
6
7
8
9
10
11
12
2. Cautions on use
This device stores "4" while RS instruction is driven or when the RS instruction is not changed over to another
mode.
12.3 Related Devices (RS2 Instruction)
Available channels vary depending on the main unit.
For details, refer to Section 3.2.
1. Bit devices
Device
ch0 ch1
M8062 M8063 M8438
M8371 M8401 M8421 Sending wait flag
M8372 M8402 M8422 Sending request
M8373 M8403 M8423
— M8404 M8424
— M8405 M8425
M8379 M8409 M8429 Time-out check flag
R: Read only
W: Write only
R/W: Read or Write
*1. FX , FX
3U
F-96
Programming communication
PP modem mode
Protocol dedicated to computer link
N:N Network
RS instruction
RS2 instruction
Parallel link
Inverter instruction
Variable analog potentiometer expansion board is used.
MODBUS communication
CF-ADP
ENET-ADP
Input/output expansion board is used.
Name
ch2
Serial
communication
error
Receiving complete
flag
Carrier detection
flag
Data set ready
*1
(DSR) flag
PLCs Ver. 2.30 or later, and FX
3UC
Description
Description
This device turns ON when a communication error occurs.
When this device (serial communication error) turns ON,
D8062, D8063 or D8438 stores the corresponding error
code.
This device remains ON while the PLC is waiting to send.
When this device is set to ON, the PLC starts to send.
This device turns ON when receiving is completed.
While this device (receiving complete flag) is ON, the PLC
cannot receive any receive data.
This device turns ON in synchronization with the CD (DCD)
signal.
This device turns ON in synchronization with the DR (DSR)
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.
, FX , FX PLCs is applicable.
3S 3G 3GC
12 Related Data
12.3 Related Devices (RS2 Instruction)
R/W
R
R
R/W
R/W
R
R
R/W