User manual

PID Loop Operation
(DL450 Only)
Maintenance
and Troubleshooting
8--22
PID Loop Operation (DL450 only)
DL405 User Manual, 4th Edition, Rev. A
The individual bit definitions of PID Mode Setting 1 word (Addr+00) are listed in the
following table.
Bit PID Mode Setting 1 Description Read/Write Bit=0 Bit=1
0 Manual Mode Loop Operation request write --
0¤1
request
1 Automatic Mode Loop Operation request write --
0¤1
request
2 Cascade Mode Loop Operation request write --
0¤1
request
3 Bumpless Transfer select write Mode I Mode II
4 Direct or Reverse-Acting Loop select write Direct Reverse
5 Position/Velocity Algorithm select write Position Velocity
6 PV Linear/Square Root Extract select write Linear Sq. root
7 Error Term Linear/Squared select write Linear Squared
8 Error Deadband enable write Disable Enable
9 Derivative Gain Limit select write Off On
10 Bias (Integrator) Freeze select write Off On
11 Ramp/Soak Operation select write Off On
12 PV Alarm Monitor select write Off On
13 PV Deviation alarm select write Off On
14 PV rate-of-change alarm select write Off On
15 reserved for future use -- -- --
PID Mode Setting 1
Bit Descriptions
(Addr + 00)