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Rs485 expansion connection and setting – Dataprobe T-APS Rack User Manual

Page 5

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Ethernet Network

Pin Assignment
1

Transmit +

2

Transmit -

3

Receive +

4

No Connection

5

No Connection

6

Receive -

7

No Connection

8

No Connection

RS232 Serial Port

Pin Assignment
1

No Connection

2

No Connection

3

No Connection

4

Signal Ground

5

Receive Data

6

Transmit Data

7

No Connection

8

No Connection



RS-232 Setup Port

The Setup Port can be used to set the parameters of the T-APS-R. You can access the Setup Port using
a VT100 terminal, or PC running terminal emulation software (like Hyperterminal).

The RS-232 port settings are: 9600bps, 8 Data Bits, 1 Stop Bit, No Parity ( 9600 N 8 1) Once you
connect to the T-APS-R, press the Escape Key (Esc) to display the password prompt. Enter the
Password and press Enter. The main system configuration menu is displayed.

Factory preset password: PASS

RS485 Expansion Connection and Setting

An RS-485 BUS is provided for expanded the communication bus to multiple nests. Be sure to connect
point A to point A, point B to point B, from HOST / MASTER to each SLAVE SHELF

DIP SW1 sets the address (master/slave) when connecting multiple T-APS-R nests using one IP. When
cascading multiple nests, master T-APS-R Nest must have the DIP Switch set as

0 0 0 0

. Up to eight

T-APS-R nests can be connected thru the host. DIP SW1 chart: 1 = ON

SW1

Host

1

2

3

4

5

6

7

4

0

0

0

0

0

0

0

0

3

0

0

0

0

1

1

1

1

2

0

0

1

1

0

0

1

1

1

0

1

0

1

0

1

0

1

A


B

JP31

EXT- RS485

4
3
2
1
SW1