Time-Out Time Setting - Mitsubishi Electric FX3U-232-BD User Manual

FX Series PLC User's Manual - Data Communication Edition
Computer Link
6.4.4

Time-out time setting

When the receiving of data from the computer is interrupted and is not restarted within the preset time (time-
out time setting), the PLC regards the situation as a timeout error and initializes the transfer sequence.
1. Time-out time setting range
The time-out time setting can be set using parameters or sequence program.
In the FX (FX), FX
2
When setting the time-out time setting in a sequence program, write a value for ch1 to D8129, and a value for
ch2 (in the FX , FX
3G
However, D8429 (ch2) cannot be set in sequence programs.
The setting range is different between the parameter method and the sequence program method.
1) Details of setting range
FX Series
FX (FX), FX
2 2C
FX
0N
FX , FX , FX
1S 1N
FX , FX , FX
2N 2NC
FX , FX , FX
3GC
3G
When the set value is "0", it is handled as "100 ms".
2) Example of setting program
When setting the time-out time setting to 60 ms
M8002
Initial pulse
2. Caution on programming
The time-out time setting is not updated until the next character data is received. Set a time to receive a
character according to the transmission speed (baud rate).
For one character (12-bit), the minimum set value of the time-out time setting is as shown below:
Baud rate (bps)
300
600
1200
2400
4800
9600
19200
38400
and FX Series, however, the parameter setting method is not applicable.
2C 0N
, FX and FX Series) to D8429 (unit: 10 ms).
3GC 3U 3UC
Setting range in parameter
Not applicable
Not applicable
1 to 255 (10 to 2550 ms)
1NC
1 to 255 (10 to 2550 ms)
3S
ch1 1 to 255 (10 to 2550 ms)
, FX
3U 3UC
ch2 1 to 3276 (10 to 32760 ms)
MOV K6 D8129
Time to receive one character (ms)
40
20
10
5
2.5
1.25
0.625
0.312
6 Control Procedures and Setting Methods
6.4 Basic Formats of Dedicated Protocol
Setting range in sequence program
(D8129 (ch1) and D8429 (ch2))
1 to 3276 (10 to 32760 ms)
1 to 255 (10 to 2550 ms)
1 to 255 (10 to 2550 ms)
1 to 3276 (10 to 32760 ms)
1 to 3276 (10 to 32760 ms)
Not applicable
For details on the program, refer to Section 9.3.
Time-out time setting (minimum set value)
50 ms (5)
30 ms (3)
20 ms (2)
10 ms (1)
10 ms (1)
10 ms (1)
10 ms (1)
10 ms (1)
A
B
C
D
E
F
G
H
I
Apx.A
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