Diff：QD711
Death：QD712
5CH D705 D713 Y705 QD705
6CH D706 D714 Y706 QD706
7CH D707 D715 Y707 QD707
Description：
Start signal（Y）：when Y is 0, close P D control, when be 1 , start P D control
Parameter P：Proportion parameter, mainly reflex system’s difference, carry on control as soon as
difference occurs to improve the system’s no difference degree.
Parameter I： ntegral parameter. Mainly used to remove whisht, improve the system’s no difference
degree.
Parameter D：Differential parameter, mainly used to control signal’s changing trend,minish system’s
shake.
Control bound Diff： n the assigned bound, carry on P D control. Beyond the bound, no P D control.
Dead area Death：When the current P D control value compares with the preceding P D control value. f
the difference between them is less than the set dead bound’s value, the module will
abnegate the current P D control value, send the preceding P D control value to the
PLC main unit.
Each parameter’s reference value：Kp=20~100；Ki=5~20；Kd=200~700；D FF=100~200
3．Setting of working mode
1）Expansion’s 0CH~3CH channels have two modes to select: current 0~20mA 、4~20mA , 4CH~7CH
channels have two modes to select, voltage 0~5V 、0~10V. Set via special FLASH data register FC inside
PLC. See the following table:
Module Channel’s D
0CH~3CH 4CH~7CH
1# module FD8250 FD8251
2# module FD8258 FD8259
3# module FD8266 FD8267
4# module FD8274 FD8275
5# module FD8282 FD8283
6# module FD8290 FD8291
7# module FD8298 FD8299
Note：As showed in the preceding table, each register set 4 channels’ mode, each register has 16 bits. From
low bit to high bit, every 4 bits separately set 4 channels’ mode.
Each bit’s definition is showed in the following table:
The following, we take module 1 as example to describe the setting format:
Register FD8250：
Take 1# module as example:
FD8250 H O O O O
0CH
1CH
2CH
3CH
FD8251 H O O O O
4CH
5CH
6CH
7CH
