Rs485 expansion connection and setting – Dataprobe T-APS Rack User Manual
Page 5
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