HIMA HIMax X-AI 32 02 - 4.4.3 Tab: I;O Submodule Al32_02: Channels

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4.4.3 Tab: I/O Submodule AI32_02: Channels
The I/O Submodule AI32_02:Channels tab contains the following parameters and
statuses for each analog input.
Global variables can be assigned to the statuses and parameters with -> and used in the
user program. The value without -> must be directly entered.
Name Data type R/W Description
Channel no. --- R Channel number, defined by default
-> Process value
[REAL
REAL R
Process value determined using the intermediate data points 4
mA and 20 mA.
4 mA REAL W
Intermediate data point used to calculate the process value on
the lowest scale final value (4 mA) of the channel.
Default setting: 4.0
20 mA REAL W
Intermediate data point used to calculate the process value on
the highest scale final value (20 mA) of the channel.
Default setting: 20.0
-> Raw value
[DINT
DINT R
Unprocessed measured value of the channel: 0...200 000
(0...20 mA).
If the raw value is evaluated instead of the process value, the
user must program the monitoring function and the value in
the event of faults from within the user program.
-> Channel OK BOOL R TRUE: Faultless channel
The input value is valid
FALSE: Faulty channel
The input value is set to 0.
Sup. used BOOL W
Activated: If a fault occurs in the transmitter supply, the
module reports a channel fault and sets the input value to 0.
Deactivated: If a fault occurs in the transmitter supply, the
module reports no channel fault and the input value is not
defined.
Default setting: Activated
-> Sup. OK BOOL R TRUE: No faults in the transmitter supply
FALSE: The transmitter supply is faulty.
OC Limit DINT W Threshold in mA for detecting an open-circuit
If the analog measured value falls under OC Limit, the module
detects an open-circuit and switches off the Channel LED for
this channel.
Default setting: 36 000 (3.6 mA)
-> OC BOOL R TRUE: One open-circuit present
FALSE: No open-circuit present
Defined through OC Limit
SC Limit DINT W Threshold in mA for detecting a short-circuit
If the measured analog value exceeds SC limit, the module
detects a short-circuit and sets the Channel LED for this
channel to Blinking2.
Default setting: 213 000 (21,.3 mA)
-> SC BOOL R TRUE: One short-circuit present
FALSE: No short-circuit present
Defined through SC limit
SP LOW DINT W Upper limit for the LOW level
SP LOW (switching point LOW) is the limit value: if this limit is
exceeded, the detects a LOW and switches the Channel LED
off.
Restriction: SP LOW ≤ SP HIGH
Default setting: 39 500 (3.95 mA)