Siemens SITRANS PCS 7 Function Manual page 73

Totalizer 1 limits and hyste‐
resis
Totalizer 2/dosing unit limits
and hysteresis
Low flow cut-off suppression InZFlSupp/ZFlSupp
Dosing setpoint
Compensation of the dosing
unit
Command Totalizer 1
Command Totalizer 2
*) The dosing setpoint and compensation values are transferred by means of cyclic data and
then read back in acyclic mode
**) The Totalizer 1 and 2 commands are retrieved at CPU startup to determine the current
totalizer state (refer to Feature bit 0)
Monitoring of volume flow limits
You can monitor the high/low alarm and warning limits for volume flow:
● VF_AH_Lim: Limit for high alarm
● VF_AL_Lim: Limit for low alarm
● VF_WH_Lim: Limit for high warning
● VF_WL_Lim: Limit for low warning
To clear a limit overshoot/undershoot error, it is necessary to recover the value to hysteresis
limits (VF_Hyst outputs).
Result of the limit monitoring
The result of limit monitoring is returned at the interconnectable output parameters:
● VF_AH_Act = 1:
Limit for high alarm reached or exceeded
● VF_AL_Act = 1:
Limit for low alarm reached or undershot
● VF_WH_Act = 1:
Limit for high warning reached or exceeded
● VF_WL_Act = 1:
Limit for low warning reached or undershot
SITRANS Library for PCS 7
Function Manual, 05/2019, A5E35351976-11
InTot1_AH_Lim/Tot1_AH_Lim,
InTot1_WH_Lim/Tot1_WH_Lim,
InTot1_WL_Lim/Tot1_WL_Lim,
InTot1_AL_Lim/Tot1_AL_Lim,
InTot1_Hyst/Tot1_Hyst
InTot2_AH_Lim/Tot2_AH_Lim,
InTot2_WH_Lim/Tot2_WH_Lim,
InTot2_WL_Lim/Tot2_WL_Lim,
InTot2_AL_Lim/Tot2_AL_Lim,
InTot2_Hyst/Tot2_Hyst
---/DSP
DCompOp/CompOp
internal use
internal use
SITRANS F M MAG 6000
5.1 Mag6T
R/W 2 34
R/W 2 35
R/W 2 36
R/W 2 38
R/W 2 33
R/W 3 34
R/W 3 35
R/W 3 36
R/W 3 37
R/W 3 23
R/W 1 217
L*) 3 68
L*) 3 69
L**) 2 30
L**) 3 30
73