Red-lion TCU User Manual download pdf (Page 63)

Figure 25, Connecting To An RLC Printer

One or several TCU units can be connected to an RLC model DMPC printer

using an optional RLC GCM422 converter module. Figure 25 shows the wiring

for a single and a multiple hook-up to the printer.

The TX EN (Transmit Enable) terminal is connected to the transmit disable

pin on the GCM422 module. The printer can then receive data when the User

Input, programmed for the print request function, is activated. The GCM422

module must have the internal jumper placed in the 485 position. The 25 pin

connector on the GCM422 module must have pins 2 and 3, and 14 and 16

jumpered. The TCU must be programmed for the same baud rate as the printer.

When more than one controller is on the line, each TX EN terminal is connected

to the transmit disable pin of the GCM422 module. Only one TCU can have the

print function activated at a time, otherwise line collision will occur resulting

in a garbled print-out.

* Terminal numbers are model

dependent. Consult label on controller

case for description.

** Some models do not have TX EN. This

is an output used in conjunction with

interface converter model GCM422,

to convert RS485 to 20 mA current

loop.

1 2 ... 58 59 60 61 62 63 64 65 66 67 68 ... 103 104

No comments

Red-lion TCU User Manual Page 63