Ametek 931S

3-16 | Model 931S / Model 932S UV Analyzers
Digital Communication
The digital communications port configurations are made on the Host
Controller board. Refer to the Host Controller board (HC board)
Customer Connections in Figure 3-5 for communication/termination op-
tions and Figure 3-6 for jumper (JP) locations/settings.
Hardware Conguration (Modbus Serial Communication)
The Explosion-Proof Digital (Local Service) Communications Port (9-pin
D-sub connector), configured as RS-232, is located on the front of the
Lower Enclosure (Figure 3-3). The port is principally intended as a tem-
porary connection for configuring and servicing the analyzer while
communicating with the analyzer via the AMETEK S93XS System 200
Configurator Software.
Hazardous Locations
Before proceeding, test the area around the analyzer for explosive
gases and proceed only when the area is found to be safe.
Do not remove the cover of the Explosion-Proof Digital
Communications Port on the front of the Lower Enclosure, do not
connect a serial cable to the Communications Port, do not open the
Upper/Lower Enclosures, and do not power up/down the analyzer or
computer if there is an explosive gas atmosphere present.
There are also two other serial port connections available for permanent
connection: Remote Service Port and Customer Data Acquisition Port
(Modbus communications), both RS-485.
To configure either port, refer to “Remote Service Port/Local Service Port
Configurations” (and “Remote Service Port RS-485, Full/Half Duplex,” if using
the Remote Service Port) or “Customer Data Acquisition Port RS-485, Full/Half
Duplex” below. The jumpers for these service ports are located on the Host
Controller board (see Figures 3-5/3-6).
Remote Service Port/Local Service Port Congurations
Set these jumpers to
To congure the analyzer for: these positions:
JP300 = 1-2
Local Service Port RS-232 or Modem JP301 = 1-2
JP302 = 1-2
JP300 = 2-3
Remote Service Port RS-485 JP301 = 2-3
(* See Note.) JP302 = 2-3
*Note: Requires additional conguration, discussed under “Remote
Service Port RS-485, Full/Half Duplex” congurations.
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WARNING