PP Systems WMA-5 - Page 50

WMA-5 Operation Manual V. 1.01 50 support@ppsystems.com
For example,
With CRC=0 (CRC Off):
Received from WMA-5: G,1,25<CR>
With CRC=1 (CRC On):
Received from WMA-5: G,1,25,043C<CR>
The following table describes the WMA-5 Command Set that can be used from the Host (i.e.
Hyperterminal) to communicate with the WMA-5. Note, the examples shown below are with CRC=0 (CRC
Off). There are two types of commands; Auto and Standard. Auto commands are commands that the
WMA-5 will send out without being prompted by the user. For example, the ‘W’ (Warm Up) command is
only sent by the WMA-5 when it is warming up. Standard commands are commands that are sent by the
user. <CR> represents a carriage return (ASCII 13).
WMA-5 Command Set Table
WMA-5 Command Set
Command
Type
Description
*
Auto
Indicates that the device has been powered up.
Axy
Standard
This command is the diagnostic toggle for the alarm relay.
x=’1’ for ALARM1
x=’2’ for ALARM2
y=’0’ for Alarm Off
y=’1’ for Alarm On
Example:
Sent from Host: A11<CR>
Received from WMA-5:
+<CR>
A11
In this example, ALARM1 would be set to on. <CR> represents a carriage return
(ASCII 13).
C,d,a,c
Standard
This command calibrates the WMA-5.
d = device
1 = CO
2
Irga
2 = O
2
sensor
a = Action
0 = Calibrate
1 = Reset to 1.0
2 = read Current Factor
c = Calibration Value
Returned String:
C,d,a,c,f,e<CR>
f = New Calibration Factor
e = Status Code / Error Code