PD6830X Explosion-Proof Modbus Scanners
Instruction Manual
55
Application Examples
The following applications show how the scanner can be configured for common applications.
Example 1: Master Polling Multivariable Level Transmitters
In this application we have a system consisting of four MTS LP-Series multivariable tank level gauges connected to a
PD6830-AX0-
I
-2 displaying product level, interface level, and average temperature. The PD6830X is setup for Master
mode, and it is polling the Modbus transmitters.
Note: As a tank level indicator displaying in units of feet, a PD6830-AX0-I-L could also be considered for this applica-
tion. This would display feet and inches in the upper display and includes a tank level indicator.
Example 1 Level Transmitter Setup, Register Numbers, & Process Variables
Serial Communications
Parameters
Tank 1
Transmitter
Tank 2
Transmitter
Tank 3
Transmitter
Tank 4
Transmitter
Address (Slave ID)
001
002
003
004
Baud Rate
4800 bps
4800 bps
4800 bps
4800 bps
Transmit Delay
50 ms
50 ms
50 ms
50 ms
Parity
None 1
None 1
None 1
None 1
Fixed Serial Data
Parameters
MTS LP-Series Transmitter Data
Level Register
30001, 30002
Interface Register
30003, 30004
Ave Temp Register
30017, 30018
Data Type
Long Integer (2 registers), Binary, Signed
Byte Order
1234 (big-endian: most significant digits register first)
