HIMA HIMax X-DI 32 02 - Tab: I;O Submodule DI32_02: Channels

X-DI 32 02 4 Start-up
HI 801 017 E Rev. 4.00 Page 39 of 56
4.3.3 Tab: I/O Submodule DI32_02: Channels
The I/O Submodule DI32_02: Channels tab contains the following parameters and
statuses for each digital 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
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: 14 000 (1.4 mA)
SP HIGH DINT W Lower limit of high level
SP HIGH (switching point HIGH) is the limit value: if this limit is
exceeded, the module detects a HIGH and switches the Channel
LED on.
Restriction: SP LOW ≤ SP HIGH
Default setting: 18 000 (1.8 mA)
-> Ch. value
[BOOL]
BOOL R Boolean channel process value in accordance with the limits
SP LOW and SP HIGH.
-> Channel OK BOOL R TRUE: Faultless channel
The input value is valid
FALSE: Faulty channel
The input value is set to 0.
LB 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: 2 000 (0.2 mA)
-> LB BOOL R TRUE: One open-circuit present
FALSE: No open-circuit present
Defined through LB limit
SC Limit UDINT W Threshold in mA for detecting a short-circuit
If the measured analog value lays below the SC Limit, the module
detects a short-circuit and sets the Channel LED for this channel
to Blinking2.
Default setting: 65 500 (6.55 mA)
-> SC BOOL R TRUE: One short-circuit present
FALSE: No short-circuit present
Defined through SC limit
Ton [µs] UDINT W Time on delay
The module only indicates a level change from LOW to HIGH if the
HIGH level is present for longer than the configured time t
on
.
Important: The maximum reaction time T
R
(worst case) for this
channel is extended by the delay time, since a signal change is
not detected until the delay time has expired.
Range of values: 0...(2
32
- 1)
Default setting: 0