Analyzer Configuration Operations; Configuration Examples; Example 1: Alarm Enable; Example 2: Setting The High Alarm Limit - Ametek 3050-OLV User Manual

Analyzer Configuration Operations

This section discusses configuring the analyzer with Modbus. The 3050 Ana-
lyzer is shipped ready to communicate via Modbus using the serial communi-
cations port. While the 3050 can be completely configured using the Modbus
connection, AMETEK recommends the use of the 3050 Configurator Software
for configuring the analyzer. The 3050 Configurator Software is compatible
with Modbus RTU as well. Switching protocols can be accomplished with the
3050 Configurator Software or with the AMETEK
"ProtocolSwitch" utility.

Configuration Examples

All of the configuration parameters of the analyzer can be modified by the
"write one or multiple holding registers" command. In most cases, it is a one-
step operation involving setting the contents of the corresponding register.
Ten different examples of using this command are presented below. The first
example is presented with all "request" and "response" formatting information.
For brevity, the remaining examples list just the key register information.

Example 1: Alarm Enable

Task
Enable Alarm Output.
Device address is 2.

Example 2: Setting the High Alarm Limit

Task
Set the analyzer to produce a "high
concentration" alarm, when the moisture
concentration exceeds 1000 PPM.
PN 305200901, Rev YT
Action Modbus transaction
Write one holding regis- Request
ter (function 06). Device Address
Register address = 102 Function Code
(holding register #40103). Register Address Hi
Value = 1(1-enable, Register Address Lo
0-disable). Register Value Hi
Register Value Lo
CRC Hi
CRC Lo
Response
Device Address
Function Code
Register Address Hi
Register Address Lo
Register Value Hi
Register Value Lo
CRC Hi
CRC Lo
Action
Write one holding register (function 06).
Register address = 66 (holding register
#40067). Value = 1000.
Serial Communication Interface
= 02Hex
= 06Hex
= 00Hex
= 66Hex
= 00Hex
= 01Hex
= 02Hex
= 06Hex
= 00Hex
= 66Hex
= 00Hex
= 01Hex
|
6-11