Appendix A:
Electrical/Mechanical Specification
Page 26
A power input terminal block, serial communication interface connector and DIP switch are accessible through the
rear cover of the 2800. A description of each is found below.
Input Power:
A removable three position terminal block is
provided for wiring 24 VDC source power.
Serial Communication Port
A 15 pin male D-Type connector provides The
RS-485 and RS-232 communication interface
to Programmable Controllers, Personal
Computers or other host devices.
4 Position DIP Switch
Switches 1 & 2 allow a termination resistors to
be connected across the RS-485 receiver.
Switch 3 are not assigned.
Switch 4 - Run / Driver File Load
This switch is set to the on position only when
a new communication driver is to be loaded
into the unit. See Section 2 for details.
PM2800U3K Revision 4
