INTRODUCTION
I-E96-217A
1 - 3
•
Operational options for both serial ports (S4).
Jumpers on the PCB configure the SPM for its intended use.
The jumpers:
•
JP3 and JP5 configure the Request To Send (RTS) hand-
shaking line.
•
JP4 and JP6 configure the Data Terminal Ready (DTR)
handshaking line.
•
JP11 and JP12 configure the Clear To Send (CTS), Received
Line Signal Detect (RLSD) and Data Set Ready (DSR) hand-
shaking lines.
•
JP9 and JP10 set the baud rate for port 1 and 2 respec-
tively.
NOTE: JP1 and JP2 are ROM compatibility jumpers. These are fac-
tory set and must remain in place for proper SPM operation. DO
NOT remove or change them.
Refer to
for jumper and switch settings.
The SPM has two card edge connectors that provide connection
points for external signals and power (P1 and P3). P1 connec-
tion provides system power to operate the module circuits, and
module bus connection to establish communication between
the SPM and other modules (refer to Table
). P3 connects
data and handshaking lines between the SPM and a Termina-
tion Unit (TU) (refer to Table
). Two RS-232C ports for com-
puter or modem and diagnostic terminal connection are
located on the TU.
FEATURES
Modular Design
The modular design of the SPM, as with all INFI 90 modules,
allows for flexibility when creating a process management
strategy. Configuring the module switches and jumpers, and
installing the module in any MMU slot gives the SPM and com-
puter connected to the SPM access to the module bus.
RS-232C Connections
The SPM supports two RS-232C serial ports. A single, perma-
nent RS-232C connector (port 2) is always available at the
module faceplate and does not require additional termination
hardware. A computer system can communicate with the INFI
90 system modules through this connector. An additional port,
used for diagnostic terminal connection, can be accessed by
connecting an optional TU with two RS-232C connectors. If
desired, the computer can be connected at this TU instead of
the faceplate connector.
Diagnostic Terminal
Connection
Port 1 can be used to connect a diagnostic terminal to check
module bus communication, and to run SPM tests.