Serial Communications Overview; Rs-232 Connections - THOMSON Omnidrive Series Installation Manual

6-28 Interfaces
•
Thomson Industries cables are available in various lengths for connecting to the serial port of an
OMNIDRIVE and a control unit, such as a PC.
The shell of the connector is grounded to the chassis for shield termination.
TIP
The following table lists the pin-outs for J5.
J5 – Serial Port Connector Pin-Outs
T 6.22
ABLE
Signal
RCV (+)
RCV (-)
XMT (+) XMT
(-)
COM
RCV
XMT
a. Do not connect any device to J4-6, J5-6, J4-9 or J5-9, except an Thomson Industries TouchPad.

Serial Communications Overview

OMNIDRIVEs communicate via a standard NRZ (non-return to zero) asynchronous serial format, which
supports either RS-232 or four wire RS-485. The pin-out arrangement on the drive serial ports provides
self-sensing of the communication standard. To change from RS-232 to four wire RS-485 requires a
simple change of the cable.
In multiple drive installations, a unique address must be assigned to each drive through software. The
factory default drive address is setting is Address 0. All addresses changes are made through OMNI LINK
software selection. Up to 32 (1 through 32) are supported.
Each drive may be assigned a unique name of up to 32 characters in length; a name is often easier to
remember than the address of a drive. OMNI LINK software automatically associates a drive name with
the correct drive address.

RS-232 Connections

The address of each drive is set using OMNI LINK software. Refer to the OMNILINK on-line Help.
Do not connect any device to J5-6 or J5-9 except an Thomson Industries
TIP
TouchPad.
Single Axis RS-232 Set Up
A single OMNIDRIVE may be selected using RS-232 communications. After cabling is attached to the
unit and the drive address is assigned, configuration of (i.e., communications with) the unit may proceed.
The following steps outline how to select the communications options:
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The maximum length of an RS-485 cable is 1220 meters (4000 feet) with 0.20 mm
(24 AWG) wire.
Pin Number
J4 - 1 (+) RS-485 differential receiver input (to drive)
J4 - 7 (-)
J4 - 4 (+) RS-485 differential transmitter output (from drive)
J4 - 8 (-)
J4 - 5 Common serial port interface
a
J4 - 6 Reserved
J4 - 2 RS-232 receiver input (to drive)
J4 - 3 RS-232 transmitter output (from drive)
a
J4 - 9 Reserved
NOTE:
immediate; they are logged but do not become active until after the drive
is RESET.
Description
Address and communications settings changes are not
2