IDEC FC6A-C16K1CE Communications Manual page 32

2: D
EVICE
Device
Address
D8492
Expansion Module Slot 12
Information
D8493
D8494 Expansion Module Slot 13
Information
D8495
D8496
Expansion Module Slot 14
Information
D8497
D8498
Expansion Module Slot 15
D8499 Information
Supplementary Descriptions of the Special Data Registers Related to the Communication Functions
■ D8026: Communication Mode Information (Port 1 to 3)
This register indicates communication mode information for Port 1 to Port 3.
The allocation of communication ports in the device (bit assignment) is as follows.
Bit Bit
15 11
0 (0000): Maintenance communication
1 (0001): User communication
2 (0010): Modbus RTU master
3 (0011): Modbus RTU slave
4 (0100): Data link communication
■ D8030: Communication Adapter Information
This register indicates information about the communication cartridges in Port 2 and Port 3.
The allocation of communication ports in the device (bit assignment) is as follows.
Bit
15
0 (00): No communication cartridges
1 (01): RS-232C communication cartridge
2 (10): RS-485 communication cartridge
3 (11): Free
■ D8052: J1939 Communication Error Code
When an error occurs in J1939 communication, the error code is written to this register. For details on J1939 communication
error codes, see "J1939 Communication Error Code (D8052)" on page 8-5.
■ D8069 to D8099: Slave (1 to 31) Communication Status/Error
Special data registers used in data link communication. For details, see "Master Station" on page 7-4.
■ D8100, D8102, D8103: Slave Number (Port 1 to 3)
The slave number is written to these registers when the Port 1 to 3 communication mode is maintenance communication,
Modbus RTU slave, or data link communication. The slave number can be changed by changing the value of D8100, D8102, and
D8103 in Function Area Settings
D8100 = Port 1 Slave No.
D8102 = Port 2 Slave No.
D8103 = Port 3 Slave No.
For details on communication modes, see the following in this manual.
Maintenance communication: "Maintenance Communication" on page 4-1
•
Modbus RTU slave: "Modbus Communication" on page 6-1
•
Data link communication: "Data Link Communication" on page 7-1
•
2-16
Description
Type ID/Status
System Software Version
Type ID/Status
System Software Version
Type ID/Status
System Software Version
Type ID/Status
System Software Version
Bit Bit Bit
8 7 4
Bit Bit
8 7
FC6A S M S A
ERIES ICRO MART
Bit Bit
3 0
Port 1
Port 2
Port 3
Bit Bit Bit Bit
3 2 1 0
Port 2
Port 3
- -O T C
LL IN NE YPE OMMUNICATION
Update Timing
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ANUAL
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