Specifications; Communication Specifications; Link Specifications - Mitsubishi MELSEC iQ-F FX5 User Manual

4.4

Specifications

Communication specifications

Communication is executed within the specifications shown in the table below. Set the baud rate, etc. in the parameter
settings of an engineering tool.
Items
Number of connectable units
Transmission standard
Maximum total extension distance
Protocol type
Control procedure
Communication method
Baud rate
Character Start bit
format
Data length
Parity bit
Stop bit
Header
Terminator
Control line
Sum check

Link specifications

Link time
■Data transfer
Data transfer
■Data transfer time
R: Number of read data points, W: Number of written data points, T: Time to send or receive one character, V: Interval time, S: Max Scan Time of PLC, D:
Message waiting time
(1) 3C Frame
Time to read continuous word devices (data registers etc.) in one station (ms)
*1 *2
+ 4 × R ) × T (ms) + V + S (SD524) × 3 + D
=(43
Time to write continuous word devices (data registers etc.) in one station (ms)
*1 *2
=(42 + 4 × W ) × T (ms) + V + S (SD524) × 3 + D
*1 This is the number of characters when format1 is used and the sum check is not provided at the time of execution of batch read/write
command.
When format4 is used, add "4" to this value.
Further, when the sum check is provided, add "4" to this value also.
Further, when specifying an extension, add "+7" to this value also.
*2 The number of points is counted in 1-word units.
(2) 4C Frame: In case of ASCII code (When format1 to format4 are used)
Time to read continuous word devices (data registers etc.) in one station (ms)
*3 *4
+ 4 × R ) × T (ms) + V + S (SD524) ×3 + D
=(49
Time to write continuous word devices (data registers etc.) in one station (ms)
*3 *4
=(48 + 4 × W ) × T (ms) + V + S (SD524) ×3 + D
4 MC PROTOCOL
72
4.4 Specifications
Specifications
16 maximum
RS-485 or RS-232C standard
RS-485
• When FX5-485ADP is used: 1200 m or less
• When using built-in RS-485 port or FX5-485-BD: 50m or
less
RS-232C: 15 m or less
MC protocol (dedicated protocol) 3C/4C frame
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Half-duplex, bidirectional communication
300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600 or
115200 bps
1 bit
7 bits/8 bits
None, odd or even
1 bit/2 bits
Fixed
Fixed
RS-485: None/ RS-232C: Provided
Provided or not provided
Data transfer
Interval time
Remarks
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Distance varies depending on communication
equipment type.
There are format1/ format4 /format5.
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When the protocol type is format5, the data
length should be 8 bits.
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