Parameters/address space
4.3 Declaration of parameters
Analog Input Module AI 8xU/R/RTD/TC HF (6ES7531-7PF00-0AB0)
Manual, 09/2016, A5E36647959-AB
33
Reference junction for TC
The following settings can be configured for the reference junction parameter:
Table 4- 3 Possible parameter assignments for the reference junction parameter TC
Fixed reference temperature The reference junction temperature is configured and stored in the module as
Dynamic reference temperature
The reference junction temperature is transferred in the user program from the
CPU to the module by data records 192 to 200 using the WRREC (SFB 53)
Internal reference junction The reference junction temperature is determined using an integrated sensor
Reference channel of the module
The reference junction temperature is determined using an external resistance
thermometer (RTD) at the reference channel (CH8) of the module.
Hardware interrupt 1 or 2
Enable a hardware interrupt at violation of high limit 1 or 2 or low limit 1 or 2.
Specifies the low limit threshold that triggers hardware interrupt 1 or 2.
Specifies the high limit threshold that triggers hardware interrupt 1 or 2.
Operating mode Fast / Standard
You can use this parameter to determine the operating mode for the module.
● Fast mode; easy integration time with less frequency suppression (minimal integration
time 2.5 ms)
● Standard mode; triple integration time with higher frequency suppression (minimal
integration time 7.5 ms)
With this parameter, you disable or enable the scalable measuring range function.
Measuring range resolution
With this parameter, you determine the resolution to 2 or 3 decimal places.
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