Step-By-Step Examples - Honeywell PPT User Manual

2.6 STEP-BY-STEP EXAMPLES (Only for single PPT connection)
READ SINGLE PRESSURE
Once the PPT is powered up and connected to a computer, enter the following command:
Type: *00P1 <cr>
where
Note: The "?" indicates a response from a null address PPT – one which has not been assigned a
device ID. A null address, 00, is coded into each PPT at the factory. When a RS-232 null address
PPT responds, it adds one to its address, hence, the response '01'. Refer to the ID command in
Appendix A for a description of addresses and responses.
In the reply, the "01" identifies the individual unit address (range 01-89). The "CP=15.458"
indicates a compensated pressure of 15.458 psi. Your unit may not show this specific reading,
depending on the applied pressure it is measuring.
SET DEVICE ID
To give the PPT an assigned address of 01 up to 89, enter the following commands:
Type: *00WE <cr>
Type: *00ID=01 <cr> This sets the null addressed PPT to device ID=01.
Type: *01S=
where:
READ PRODUCTION DATE
To read the production date, enter the following command:
Type: *01P=
Response:
* indicates the start of a command
00 is the null address of the PPT (see note below)
P1 is the command to read the most current pressure
This enables the PPT to change a parameter in RAM
Note: The device ID is now used in the command input
<cr> Response: #01S=00052036
The "#" now replaces the "?" in the header and indicates the PPT
response is from an address assigned unit.
* indicates the start of a command
00 is the null address of the PPT
W E is the command to enable a configuration parameter change
I D is the command to change the device address
01 is the assigned PPT address for this example
S= is the command to read the serial number
<cr> Response:
?01CP=15.458
(for RS-232)
?00CP=15.458
(for RS-485)
(serial number test)
#01P=04/13/95
5