User`s manual

Western Reserve Controls, Inc. 1782-JDC User’s Manual

characters set to 20, pad mode off, etc. The full list of default settings can be found under

Default Settings in the User’s Manual. If you wish to change any parameters from their

default settings you will need to use a DeviceNet software configuration tool. Many of these

tools have EDS readers, which make the editing process easier.

10. Does a 1782-JDCx gateway provide electrical isolation?

Yes, a 1782-JDCx gateway provides 1000V network electrical isolation.

11. What are the currently available 1782-JDC-x gateway models?

1782-JDC-1: Isolated RS232 Interface

1782-JDC-2: Isolated RS485 Interface

1782-JDC-4: Isolated RS485/RS422 Interface

1782-JDCE-1: Isolated RS232 Interface with Enhanced Parameters

12. On what DeviceNet baud rates does the 1782-JDCx communicate?

The unit works with 125k, 250k or 500k baud rates. It is default set to autobaud on

DeviceNet. A fixed baud rate of 125k, 250k or 500k may also be assigned with a software

configuration tool.

13. On what baud rates does the serial port communicate?

The serial port on the 1782-JDCx will communicate on baud rates of: 1200, 2400, 4800,

9600, 19.2k, or 38.4k baud.

14. How do I connect a 1782-JDCx gateway to a serial port device?

You connect the JDCx to a serial port device with the Phoenix connectors on the unit which

are labeled for which signal goes in each port of the connector. For RS-232 or RS-485

communications the signal/pin assignments are as follows:

For RS-422 or RS-485 communications the signal/pin assignments are as follows:

Pin #

Designator

(RS422/RS485)

RS422

Signal

RS485

Signal

5 TX- / GND Transmit - no connection

4 TX+ / GND Transmit +

no connection

3 GND / GND Ground Shield

2 RX- / SG- Receive - Signal -

1 RX+ / SG+ Receive + Signal +

15. How is the Master Handshake mode different from the Hardware handshake RTS/CTS?

Master Handshake mode is a data control mechanism between the DeviceNet master and

the 1782-JDCx (after the JDCx receives data from serial device), communicated in IO

message. The 1782-JDCx indicates new data arrival and waits for Master to issue a new

record number, to be used with new data. The hardware handshaking via RTS/CTS (which