User Connections To The Main Serial Port (P1); Dil Switch (Sw1) Settings; Terminators - Siemens Apogee P1 Technical Manual

Siemens Apogee P1 Communications Interface

User Connections to the Main Serial Port (P1)

The serial port on the Option allows the following Apogee P1 links to be made.
Electrical Connections
Number of transmitters and transceivers
allowed per differential pair of wires
Maximum cable length
Technology Box
Figure 1 Option showing Terminal Block TB1 and DIL Switch SW1

DIL Switch (SW1) Settings

Set this switch to select 2-wire or 4-wire operation, and to switch in a terminator for the last
drive in the system.
Switch Switch Switch Switch Status Status Status Status
1 OFF
ON
2 OFF
ON

Terminators

• The unit logically furthest from the supervisor must have switch 2 set to ON.
• All other units in the system must have switch 2 set to OFF.
The supervisor's receiver input should also have a terminating resistor, chosen to match the
characteristic impedance of the cable, typically 100 to 165 Ohms.
4-wire
differential
32 drivers
32 receivers
4000ft/1200 metres
6053
Terminal Block
Switch SW1
PLG1
1
1
1 2 3 4 5 6
2
2
1
BI SYNCH
Description Description Description Description
4-wire (default)
2-wire
Terminator out (default)
Terminator in
RS485 RS485 RS485 RS485
2-wire
differential
32 transceivers
6055
Technology Box
TB1
OFF
3
Switch SW1
ON
1
2