Ametek AMEVision 3050-TE, Руководство пользователя

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Modbus Communication Interface
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A-15
ANALYZER CONFIGURATION OPERATIONS
In this section, configuring the analyser with the MODBUS is discussed.
The 3050 analyzer shipped ready to communicate via MODBUS using the
serial communications port. While the 3050 analyzer can be completely
configured using the MODBUS connection, AMETEK recommends the
use of the 3050 Configurator software for configuring the analyser. 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, which is discussed
in the next section.
All of the configuration parameters of the analyser 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 correspond-
ing 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.
ACTION.
Write one holding register (function 06). Register address = 102 (holding
register #40103). Value = 1(1-enable, 0-disable).
MODBUS transaction:
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