Mitsubishi Electric QJ71MB91 User Manual page 364

Modbus interface module
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APPENDICES
App
- 11
Appendix 3 Processing Time
TableApp.10 Processing time calculation items used when mounted with a programmable
Item
Any of the following values are applied depending on the
function code and assignment status.
Function code
01
02
03
04
05
06
n1
07
08
11
12
15
16
17
20
21
22
23
Any of the following values are applied depending on the
function code and assignment status.
Function code
01
02
03
04
05
06
n2
07
08
11
12
15
16
17
20
21
22
23
* 1 Request message transmission time [ms]:
Ttq = Request message size [bytes]
* 2 Response message transmission time [ms]:
Ttr = Response message size [bytes]
* 3 1 character time = Bits of 1 character / Transmission speed [bps]
controller CPU (Continued)
Description
When programmable
controller CPU device is
assigned
1
1
1
1
1
1
1
0
0
0
1
1
0
1
1
2
2
When programmable
controller CPU device is
assigned
Normal case
Worst case
1
2
1
2
1
2
1
2
1
2
1
2
1
2
0
0
0
0
0
0
1
2
1
2
0
0
1
2
1
2
2
4
2
4
Bits of 1 character / Transmission speed [bps]
Bits of 1 character / Transmission speed [bps]
Unit
When buffer
memory is
assigned
0
0
0
0
0
0
-
0
0
0
0
0
0
0
0
0
0
0
When buffer
memory is
assigned
0
0
0
0
0
0
-
0
0
0
0
0
0
0
0
0
0
0
1000
1000
1000

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