Ametek 3050-DO

PN 305725901, Rev YF
Analyzer Conguration Operations
This section discusses conguring the analyzer with Modbus. The 3050 Ana-
lyzer is shipped ready to communicate via Modbus using the serial commu-
nications port. While the 3050 Analyzer can be completely congured using
the Modbus connection, AMETEK recommends the use of the 3050 Analyzer
Congurator Software for conguring the analyzer. The 3050 Analyzer Con-
gurator Software is compatible with Modbus RTU as well. Switching protocols
can be accomplished with the 3050 Analyzer Congurator Software or with the
AMETEK “ProtocolSwitch” utility, which is discussed in the next section.
Conguration Examples
All of the conguration parameters of the analyzer can be modied 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 dierent examples of using this command are presented below. The rst
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 Action Modbus transaction
Enable Alarm Output.
Device address is 2.
Write one holding regis-
ter (function 06).
Register address = 102
(holding register #40103).
Value = 1(1-enable,
0-disable).
Request
Device Address = 02Hex
Function Code = 06Hex
Register Address Hi = 00Hex
Register Address Lo = 66Hex
Register Value Hi = 00Hex
Register Value Lo = 01Hex
CRC Hi
CRC Lo
Response
Device Address = 02Hex
Function Code = 06Hex
Register Address Hi = 00Hex
Register Address Lo = 66Hex
RegisterValue Hi = 00Hex
Register Value Lo = 01Hex
CRC Hi
CRC Lo
Example 2: Setting the High Alarm Limit
Task Action
Set the analyzer to produce a “high
concentration” alarm, when the moisture
concentration exceeds 1000 PPM.
Write one holding register (function 06).
Register address = 66 (holding register
#40067). Value = 1000.
6-12 | 3050-DO Moisture Analyzer