Module Setup; Unpacking Theu; Data Translation; Input /Outputd - GE S768DAV User Manual

Module Setup

M S
2
ODULE
U
2.1
NPACKING THE
In the event that anything is missing from the following list, contact your authorized dealer or
representative.
! S768DAVT (S7768DAVT) Transmitter or S7768DAVR (S7768DAVR) Receiver
! User Manual
Save the original packing materials in case it becomes necessary to return the unit.
CAUTION:
Take all necessary precautions to protect the unit from static electricity during the following procedures.
Equipment damage may result.
D T
2.2
ATA RANSLATION
The data translation capability of the S768DAV series is unique in the industry. It enables translation from
one data format to another and eliminates the need for external translation devices.
The translation is in the physical layer only; it cannot interpret specific protocols or translate commands.
Due to the encoding schemes utilized in Manchester and Biphase, these formats are exempt from
translation. Data translation examples are shown in Table 1.
Table 1. Data Translations
Translation
TTL to RS232 three-wire
RS232, three-wire to TTL
TTL to RS422
RS422 to TTL
RS232, three-wire to RS422
RS422 to RS232, three -wire
RS232, five-wire to RS485
RS485 to RS232, five-wire
I /O
2.3
NPUT UTPUT
Determine the data formats required for input and output for both data channels. The data formats may
be the same or different for each channel. The data format can also differ from input to output on the
same data channel.
8
ETUP
U

NIT

TX Switch RX Switch
Setting Setting
3 1
1 3
3 4
4 3
1 4
4 1
2 7 - A
7 – A 2
D F
ATA ORMAT
S768DAV – S7768DAV User Manual
Comments
Signal level conversion
Signal level conversion
Single ended to differential conversion
Differential to single ended conversion
Single ended to differential conversion
Differential to single ended conversion
RS232 handshaking bit is used to indicate tri-state
Tri-State detection circuitry activates handshaking bit
11-0768DAV-B/ December 2003