Mitsubishi Electric MELSEC iQ-F FX5 User Manual page 42

Modbus communication
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Serial communication error details
This device stores the current error details during serial communication. (Page 60 Error code.)
Only for FX5
CH1
CH2
SD8501
SD8511
R: Read
Precautions
Do not change the device value using a program or an engineering tool.
The device is cleared when the power supply is turned from off to on, reset, set from STOP to RUN, or SM50 (Error Detection
Reset Completion) is turned on, only in the master.
Communication format setting value
This device stores the communication format setting value.
Only for FX5
CH1
CH2
SD8502
SD8512
R: Read
The following table shows the parameter descriptions of the communication format.
Bit
b0
b1, b2
b3
b4 to b7
b8 to b15
Precautions
Do not change the device value using a program or an engineering tool.
The setting value changes when the power supply is turned from off to on or reset.
7 FUNCTION
40
7.3 Related Devices
For FX3 compatibility
CH3
CH4
CH1
SD8521
SD8531
SD8403
For FX3 compatibility
CH3
CH4
CH1
SD8522
SD8532
SD8405
Name
Parity bit
Stop bit
Baud rate (bps)
Description
CH2
SD8423
Stores the current error details generated during serial
communication.
Description
CH2
SD8425
Stores the parameters set by an engineering tool. For
details, refer to the following table.
Description
0 (bit = OFF)
(b2, b1) = (0, 0): None
(b2, b1) = (0, 1): Odd
(b2, b1) = (1, 1): Even
1bit
(b7, b6, b5, b4) = (0, 0, 1, 1): 300
(b7, b6, b5, b4) = (0, 1, 0, 0): 600
(b7, b6, b5, b4) = (0, 1, 0, 1): 1200
(b7, b6, b5, b4) = (0, 1, 1, 0): 2400
(b7, b6, b5, b4) = (0, 1, 1, 1): 4800
(b7, b6, b5, b4) = (1, 0, 0, 0): 9600
(b7, b6, b5, b4) = (1, 0, 0, 1): 19200
(b7, b6, b5, b4) = (1, 0, 1, 0): 38400
(b7, b6, b5, b4) = (1, 0, 1, 1): 57600
(b7, b6, b5, b4) = (1, 1, 0, 1): 115200
R/W
R
R/W
R
1 (bit = ON)
2bit

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