Specifications; Communication Specifications - Mitsubishi FX3U Series User Manual

FX Series Programmable Controllers
3U
User's Manual - MODBUS Serial Communication Edition
2.

Specifications

This chapter explains the communication specifications and performance.
2.1

Communication Specifications

MODBUS Serial Communication can be implemented according to the specifications shown in the table
below with the corresponding special adapter attached to the PLC, either the FX
485ADP-MB. The communication format, protocol, etc. are determined by the communication setup using a
sequence program, as described in Chapter 5.
Item
Channels per PLC
Communication Interface
Transmission Speed
Data Length
Transmission
Stop Bit
Specifications
Transmission Distance
Communication Protocol
Number of Slaves
Number of Functions
Master Function
Number of Simultaneously
Executable Instructions
Maximum Write Data
Maximum Read Data
Number of Functions
Number of Simultaneous
Slave Function Acceptable Request
Messages
Station Number
External Dimensions
Special Adapter
Weight
Note
This table details the specifications when using MODBUS communication. The FX
232ADP-MB also features FX
following communication types are also available when using the following modules:
FX -485ADP
3U
FX -232ADP
3U
For further information on the communication types and please refer to the FX Series Programmable
Controller User's Manual - Data Communication Edition.
12
FX
3U
RS-232C
300, 600, 1200, 2400, 4800, 9600,
Up to 15m (49'2")
-485ADP and FX
3U
N:N network, Parallel link, Computer link, Non-protocol
communication and Inverter communication.
Computer link, Non-protocol communication, Programming
communication and Remote maintenance.
Specifications
-232ADP-MB FX -485ADP-MB
3U
1 Channel
RS-485
or 19200 bps
7-bit or 8-bit
1-bit or 2-bit
Up to 500m (1640'5")
RTU or ASCII
1 Slave 16 Slaves
14 (+14 Diagnostic functions)
1 Instruction
123 words or 1968 coils
125 words or 2000 coils
14 (+14 Diagnostic functions)
1 Request Message
1 to 247
90 (H) x 17.6 (W) 74 (D) [mm]
80g
-232ADP functionality respectively. Therefore the
3U
2 Specifications
2.1 Communication Specifications
-232ADP-MB or FX
3U
Remarks
Either 1 MODBUS Master or 1
MODBUS Slave channel
Transmission Distance varies
depending on communication
equipment type
Number of Slaves varies
depending on communication
equipment type
-485ADP-MB and FX
3U
-
3U
-
3U