Panasonic FP7 Series User Manual

11.4 MODBUS RTU Format
11.4.1 MODBUS RTU command format
■
MODBUS RTU command format
START ADDRESS FUNCTION DATA CRC CHECK END
3.5-character
time
8 bits 8 bits n*8 bits 16 bits 3.5-character
time
ADDRESS (station
no.)
8 bits, 0 to 255 (decimal)
(Note 1)
FUNCTION 8 bit
DATA Varies depending on commands.
CRC 16 bit
END 3.5-character time (Differs depending on baud rate.Refer to the "Reception judgment time"
section.)
(Note 1) 0 = Broadcast address
■
Reception judgment time
The process for receiving a message completes when the time that is exceeding the time
mentioned below has passed after the final data was received. Reception done judgment time
is set at approx. 32 bits of time.
Baud rate Reception done judgment time
300 Approx. 106.7 ms
600 Approx. 53.3 ms
1200 Approx. 26.7 ms
2400 Approx. 13.3 ms
4800 Approx. 6.7 ms
9600 Approx. 3.3 ms
19200 Approx. 1.7 ms
38400 Approx. 0.8 ms
57600 Approx. 0.6 ms
115200 Approx. 0.3 ms
230400 Approx. 0.14 ms
11.4.2 MODBUS RTU Response Format
■
Response in normal status
● The same message as a command is returned for a single write command or for a loop back
test.
11.4 MODBUS RTU Format
11-10 WUME-FP7COM-07

Panasonic FP7 Series Specifications

General

Brand	Panasonic
Model	FP7 Series
Category	Controller
Language	English