Envision Peripherals NV3128 User Manual download pdf (Page 38)

NV3128 RS-422A Machine-Control Routing Switch 2-14

2.3 CABLING THE NV3128

Figures 2-2 and 2-3 at the end of this section show the rear panel

connections on the NV3128. Notice that there are old and new frames

corresponding to the old Command Interpreter and the new Universal

Control Card.

2.3.1 DATA I/O

Machine control I/O connections to the rear panel are straightforward.

D connectors terminated according to the following pin-out are plugged

into any of the 128 terminals provided.

2.3.2 CABLING THE SERIAL COMMAND INTERFACE

The control-system interface cable connects to the jack marked RS-

422 PRIMARY CNTRL" on the new frames or "RS-422/RS232 -

Controlled In" on the old frames. To implement a loop-through

connection for a multidrop, networked command environment, connect

the next piece of equipment to the looping connector next to the

primary control connector. It should be noted that the maximum

number of chained connections is six without undue signal degradation.

RS-422A:

An RS-422A cable connecting the Controller to the primary control

data connector should be a nine-wire cable meeting the EIA RS-422

specification. The connector at the NV3128 end must be a nine-pin D

connector with male pins. The connector at the controller side is

typically a nine-pin D connector with male pins. The connection list

follows:

1 2 ... 33 34 35 36 37 38 39 40 41 42 43 ... 91 92

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Envision Peripherals NV3128 User Manual Page 38