D12
EX-IR
Gas Transmitter with IR Smart Sensor
Dec 2019 ( 85-0004 Rev A)
67
COM Setup Menu
The COM Setup Menu is used to select the protocol and configure the transmitter’s connection settings.
Figure 75. COM Setup Menu
Item
Select to …
Protocol
Change the slave protocol.
•
ASCII (default)
•
Modbus (option)
•
HART (option)
•
None
Protocol selection is performed at the factory and may not be
changed. Settings for the ASCII and Modbus protocols may be
changed, but are restricted for the HART protocol.
Interface
Change the physical communication interface that the transmitter
will control during transmit and receive functions:
•
RS232 (available for ASCII or Modbus, not for HART)
•
RS485 (available for ASCII or Modbus, not for HART)
•
FSK (HART only)
Baud Rate
Change the baud ra
te of the transmitter’s UART
.
May be set to: 300, 600,1200, 2400, 4800, 9600, 14.4k, 19.2k,
28.8k, 38.4k, 57.6k, 115.2k, 230.4k, and 460.8k.
The value is fixed at 1200 for HART FSK, and defaults to 9600 for
Modbus and ASCII.
Settings
Change the parity, number of data bits, and number of stop bits
of the transmitter’s UART:
•
N,8,1 …no parity, 8 data bits, 1 stop bits
•
N,8,2 …no parity, 8 data bits, 2 stop bits
•
E,8,1 …even parity, 8 data bits, 1 stop bit
•
O,8,1 …odd parity, 8 data
bits, 1 stop bit
The value is fixed at O,8,1 for HART protocol, and defaults to N,8,1
for Modbus and ASCII.
Settings= N,8,1