13
14
4.1.5 4-Wire Connection Using DB-25
Most DB-25 connectors on the Model 593/25F conform to EIA-530
interface standards. When connecting to the RS-422/485 devices
which also conform to EIA-530 standards, your cable should have
crossed over wiring, as shown below.
Model 593/TB
RS-485
SIGNAL
DB-25 PIN
DB-25 PIN
SIGNAL
TXA+
2
3
RXA+
TXB-
14 16 RXB-
RXA+
3
2
TXA+
RXB-
16 14
TXB-
4.1.6 2-Wire Connection Using DB-25
Most DB-25 connectors on the Model 593/25F conform to EIA-530
interfaces standards. The RS-422/485 devices also conform to EIA-530
requirements and when connecting these devices, follow the wiring
shown below.
Model 593/25F
RS-485
SIGNAL
DB-25 PIN
SIGNAL
TXA
2
+
TXB
14 -
4.2 OPERATING THE MODELS 593 SERIES
Once the Models 593/25F, 593/45, and 593/TB are properly configured
and installed, it should operate transparently
___
as if it were a standard cable con-
nection. Plug in the external power supply and the units will be powered up.
APPENDIX A
PATTON ELECTRONICS MODEL 593/25, 593/45, and 593/TB
SPECIFICATIONS
Transmission Format:
Asynchronous, full or half duplex
Interface Standard:
RS-422/RS-485
Connectors:
Model 593/25F; DB-25 female on
both sides
Model 593/45; RJ-45 on both sides
Model 593/TB; Terminal block on
both sides
Data Rates:
Up to 115.2 kbps
Power Supply:
External wall-mount transformer,
Reg5 VDC @ 120mA
Isolation:
2500 Vrms/optical Isolation
Dimensions:
Model 593/45 & 593/TB
3.8”L x 2.1”W x 0.79”H
Model 593/25
4.1”L x 2.1”W x 0.79H
Temperature Range:
0-60
°
C (32-140
°
F)
Altitude:
0-10,100 feet
Humidity:
5 to 95% noncondensing
