PT113
Instruction Manual
9
4.7 RS-232C PORT CONNECTION
Use the RS-232C port to connect to AzComT software for setup and calibration.
The RS-232C connection is made to the front panel connector of the PT110MB, for all other mmodels it
is as shown in 4.2.1CONNECTIONS.
RS-232C port usage and specifications are shown in the table below. Refer to 9.1.1 Serial Data Output
of the manual to set up this interface for the PT113MB and PT113EN.
Usage
Interfacing with a PC, PLC or remote display connection.
Connection to AzComT Software. All models PT113
Data formats
PT113MB,
PT113EN only
Continuous, BSI Protocol, Modbus-RTU High-Low,
Modbus-RTU Low-High
You will find the data format details in 9.1.1.4.
Baud rate
1200 to 115200 bps, (9600 Default)
Length and parity
8 bits no parity (Default).
Start / Stop bits
1 start bit and 1 stop bit
Table 1: RS-232C Serial Interface Specifications
The connection to the indicator RS-232 port is made as below. Connection to external equipment can
be either 2 wire for transmitting data only to a PC or remote display or 3 wire for conversational
transmission where it is necessary to send the indicator commands or set up information and necessary
for configuring the PT113.
Note: Connecting the shield to the reference ground will protect your weighing system against EMC
disturbances.
4.8 CONFIGURING AND CALIBRATION
Before using the scale it must be configured (programmed) to transmit the correct capacity and
increment and have a number of advanced functions configured in 6 SYSTEM CONFIGURATION AND
SETUP. The scale must also be calibrated to display the weight correctly as detailed in Error:
Reference source not found Error: Reference source not found.
Warning
:
If the scale has been sealed, call a person with authorisation before modifying the scale or
settings.
To access configuration and calibration settings PT provides AzComT software for transmitters. THE
HOUSING DOES NOT NEED TO BE OPENED.
4.8.1 PROGRAMMING
Program the instrument according to the needs of your application in this step. See 6 SYSTEM
CONFIGURATION AND SETUP
•
Set Communication parameters.
•
Set configuration parameters for scale functions related with the application like saving tare
before power off and restart in Net mode and digital I/O related entries.
•
Parameters to set up the scale such as zeroing range, scale capacity and division values
should be set.
•
For connection of any peripheral devices to the instrument, you need to set the related
parameters in the PT113 as required.
•
The front panel Programming Switch used to set fieldbus rack address is explained in 5.1.3.
Warning:
The programming and parameter descriptions are detailed later in the manual. We
recommend you save these parameters before the next step in case the settings are lost if calibration
fails due to an error.
4.8.2 CALIBRATION
You will need to calibrate the scale after programming the parameters. You may follow one the
calibration methods below.
