Process value monitoring V1 (S7-1200, S7-1500) - PID

Using PID_Compact (S7-1200, S7-1500)
ft:publication_title
Using PID_Compact (S7-1200, S7-1500)
Product
PID
Version
V20
Publication date
11/2024
Language
en-US
Process value monitoring V1

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 will be displayed at the PID_Compact 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 will be 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_Compact will respond as follows:

Process value

InputWarning_H

InputWarning_L

Operating mode

> 98° C

TRUE

FALSE

Inactive

≤ 98° C and > 90° C

TRUE

FALSE

Automatic mode

≤ 90° C and ≥ 10° C

FALSE

FALSE

Automatic mode

< 10° C and ≥ 0° C

FALSE

TRUE

Automatic mode

< 0° C

FALSE

TRUE

Inactive