Siemens SIMATIC S7-1500T Function Manual

Using PID_Temp
6.2 Configuring PID_Temp
PID control
170 Function Manual, 03/2017, A5E35300227-AC
6.2.4
Advanced settings
6.2.4.1
Process value monitoring
Configure a warning high and low limit for the process value in the "Process value
monitoring" configuration window. If one of the warning limits is exceeded or undershot
during operation, a warning is displayed at the PID_Temp instruction:
● At the InputWarning_H output parameter if the warning high limit has been exceeded
● At the InputWarning_L output parameter if the warning low limit has been undershot
The warning limits must be within the process value high and low limits.
The process value high and low limits are used if you do not enter values.
Example
Process value high limit = 98° C; warning high limit = 90° C
Warning low limit = 10° C; process value low limit = 0° C
PID_Temp will respond as follows:
Process value
InputWarning_H
InputWarning_L
ErrorBits
> 98 °C
TRUE
FALSE
0001h
≤ 98° C and > 90° C
TRUE
FALSE
0000h
≤ 90° C and ≥ 10° C
FALSE
FALSE
0000h
< 10° C and ≥ 0° C FALSE TRUE 0000h
< 0° C
FALSE
TRUE
0001h
You can configure the response of PID_Temp when the process value high limit or low limit
is violated in the output settings.

Siemens SIMATIC S7-1500T Specifications

General

Brand	Siemens
Model	SIMATIC S7-1500T
Category	Controller
Language	English