4101-2 Modular Controller
3-3
4
Power supply connector (CONN4): for connecting to the 4910
PSU.
5
Auxiliary ouput connector (CONN5): connected at manufacture
to the auxiliary power connectors on the sides of the chassis.
6
Cable clamps.
7
RS232 baud rate jumpers (JU1): for selecting the baud rate of
the RS232 communication with the PC. (Does not affect the
baud rate of the RS485 communications which is fixed at
9600.)
8
Rotary switches (SW1, SW2): for setting the Controller address.
9
RAM expansion connector (CONN12): for connecting the
4105-2 Memory Expansion module.
10
Reset button (SW4): active only when held down on power-up.
Resets Controller and clears database.
11
DIL switch (SW3): only switches 3 and 4 are used.
Up is ON, down is OFF.
SW3 SW4 Function
Off Off Comms set to RS485. Use this setting for a
Controller connected to a Comms module and
other Controllers on a branch, or for a slave
Controller connected to its master Controller
in a master/slave system.
Off On Comms set to RS232. Use this setting for a
single Controller system connected directly to
the PC.
On On Both RS232 and RS485 comms. Use this
setting for the master Controller in a
master/slave system. The RS232 connection
is made to the PC, the RS485 connection is
made to the slave Controller.
Fuse (FS1) for power to the Controller (1.25A slow blow).
Fuse (FS2) for auxiliary power (4A slow blow).
Tamper sensor, POWER and STATUS LEDs: LEDs show
through window in lid, tamper switch held open circuit when
lid is in place. Connected to CONN3 at manufacture.
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