Digital i/o setup – Sierra Wireless MP 875 User Manual
Page 63
Configuring the MP Modem to Report GPS and I/O
Data
Rev 1.5 Jul.08
63
Digital I/O setup
The Digital Input/Output window (
Tools > Options > MP >
Input/Output > Digital I/O
) is used to configure devices on the two
digital I/O and two digital input ports. Each tab corresponds to
a pin:
To configure a digital sensor or gauge, select the tab that corre‐
sponds to the pin you are using and complete the fields as
follows:
•
Label: Provide a description of the sensor or gauge, up to
20 characters in length.
•
Type: Select
Input
,
Output
, or
Not used
. (
Output
is not
available on tabs 3 and 4.)
•
Logic low name: Describe the state of the device at logic
level low, up to 20 characters in length. (For example, if a
switch in the off position leads to a logic low, you could
choose to label it
Switched Off
.)
•
Logic high name: Describe the state of the device at logic
level high, up to 20 characters in length (such as
Switched
On
).
•
Alarm logic level: Assign an action associated with the I/O
port:
·
high: A notification is sent, and the event is logged, if the
state changes from a logic low to a logic high.
·
low: A notification is sent, and the event is logged, if the
state changes from a logic high to a logic low.
·
log only: No notification is sent, but any change in logic
level is logged.
The name and location of the log file is specified in the
Input/Output window (
Tools > Options > MP > Input/Output
).
By default, the log file is located in the program folder or
user folder and is called MpIoLog.txt.
•
Current value: Shows the current value of the port.
Digital Tab
Connector Pin
I/O 1
Input or output on pin 3
I/O 2
Input or output on pin 11
Input 3
Input on pin 4
Input 4
Input on pin 12