HIMA X-AI 32 01 - Tab: I;O Submodule AI32_01: Channels

X-AI 32 01 4 Start-up
HI 801 021 E Rev. 4.00 Page 37 of 58
4.3.3 Tab: I/O Submodule AI32_01: Channels
The I/O Submodule AI32_01: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 process value is valid.
FALSE: Faulty channel
The process 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 of 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)