PN 903-8797, Rev A
Sub-Menu Item
Description
UsrRelay
User-selectable relay type (Relay 4). Upon instructions from the customer, AMETEK can
configure Relay 4 (and LED 4) at the factory to indicate, when turned On, either:
•
NoD
= Hydrocarbon Dewpoint Temperature Not Found.
If the User Relay is configured to indicate
NoD
, the condition is updated at the
end
of each
Cooling Stage. The result is used to interpret the temperature on the analog output signal
channels.
or
•
Pur
= Purging/Hold Stage Is In Progress (typically used for Data Acquisition Systems (DAS)
or other remote systems).
If the User Relay is configured to indicate
Pur
, the relay will be activated at the
beginning
of
the Purging/Hold Stage and deactivated at the
end
of the Purging/Hold Stage. This function
indicates to remote DAS systems that new data is present on the analog output channels.
Note:
While this function is typically configured by AMETEK at the factory, the User
Relay can be changed from the
ApplicCFG
menu.
UsrVI
User-selectable V/I type (Analog output 4). The only option currently available is:
•
SCode
= basic Status Code [if
H2O DP:DISAB
option is enabled from the
MonitorCFG
menu].
Net
This parameter allows you to select the Network communications type. Options include:
•
S2K
= System 2000 (Communicating via System 200 Configurator Software). For details
about using this software to communicate with the analyzer, refer to the 241CE II Analyzer
System 200 Configurator Software
User Manual
shipped with your system.
•
MODBUS
= Communicating via Modbus.
For details about using Modbus interface to communicate with the analyzer, refer to the
241CE II Analyzer Serial Communication Interface (Modbus)
Manual Supplement
shipped
with your system.
MB Addr z
Modbus slave address, used to select a port that will allow communications between a
computer and the analyzer, where ‘z’ is a number between 0–250. The definitions include:
Address
Definition
0
Disable Modbus interface
1–127
Enable Modbus interface on RS-232 port
128–255
Enable Modbus interface on RS-422 port
Comm
Serial communication type. Options include:
• RS232 (system default)
• RS422
• 4WRS485 (4-wire RS-485)
• 2WRS485 (2-wire RS-485)
After selecting the desired serial communication type,
several jumpers on the CPU board may need to be changed in order to establish
communication. See jumper settings listed under “Configuring the Hardware for Digital
Communication” in Chapter 2.
Baud
Serial communication baud rate. Options include:
• 9600 (system default)
• 4800
• 2400
• 1200
I1L
On the first analog output – V/I #1 – this is the low-scale (minimum)
WDP
temperature
(°C or °F) corresponding to the 4.00 mA output.
Note:
This parameter will be displayed only if an external water signal is provided and if
the
H2O DP:EXT
option is enabled from the
MonitorCFG
menu.
3-16 | 241CE II Hydrocarbon Dewpoint Analyzer
