Micromod Micro-DCI: 53MC5000 PLC AND PRINTER INTERFACES - Manual (Page 12)

NOTE:
EITHER THE ITB RS-232 OR RS-485 SERIAL PORT CAN BE CONNECTED TO A REMOTE DEVICE (PLC OR PRINTER).
THE RS-232 SERIAL PORT HAS AN IDEAL DATA TRANSFER RANGE OF APPROXIMATELY 50 FT. (15.2 M),
WHEREAS THE RS-485 SERIAL PORT DATA TRANSFER RANGE IS MUCH GREATER (E.G., 4000 FT. [1219 M]).
THEREFORE, AN RS-422/232 ADAPTER CAN BE USED FOR AN RS-232 REMOTE DEVICE TO INTERFACE IT TO THE
RS-485 SERIAL PORT IF LONGER COMMUNICATION DISTANCES ARE REQUIRED. (THE RS-422 AND RS-485 SE-
RIAL INTERFACES HAVE COMPATIBLE SIGNALS FOR THIS APPLICATION.)
Figure 1-1. DDI-A and DDI-B Channels
RS-232/485
ITB
686B720
DDI-A
❚
❚
❚
❚
❚
❚
■ ■ ■ ■
EXPANSION
BOARD
SLOTS
5 4 3 2 1
DDI-A DDI-B
DDI-A AND DDI-B AUXILIARY
PROCESSOR BOARDS (APBs)
FIRMWARE IS REV 1 OR
HIGHER. (SEE SECTION 9,
TABLE 9-1, TO REMOVE AND
INSTALL AN APB.)
MAIN
BOARD POWER
SUPPLY
FIRMWARE IS REV. 4 OR HIGHER
FOR DDI PLC/PRINTER OPTION
RS-232/485
ITB
686B720
DDI-B
OR
OR
TO PLC/PRINTER
RS-232
RS-485
RS-232
RS-485
ALL POWER AND GROUNDING
CONNECTIONS NOT SHOWN
TO PLC/PRINTER
+
53MC9015 53MC5000 PLC and Printer Interfaces
1-2
INTRO