User's Manual

21
April ’00 Chapter 2. Hardware
Figure 5: RS422/RS485/DAT Switches
Figure 6: Synchronization DIP Switches
Table 23: RS422/RS485/DAT Settings DIP Switches
Switch OFF ON
1 RS422 RS485
2 RS422 RS485
3-
RS422/RS485 Rx+/Rx-
line-to-line termination (120
Ω
)
4 DAT Disabled DAT Enabled
5 DAT LEDs Disabled DAT LEDs Enabled
Notes:
SW1 and SW2 must always be in the same position as each other,
either both OFF or both ON.
Table 24: Synchronization DIP Switches
Switch OFF ON
1 - Synchronization Rx+ line pull-up (180
Ω
)
2 - Synchronization Rx- line pull-down (180
Ω
)
3-
RS422/RS485 Rx+/Rx- line-to-line
termination (120
Ω
)
4 Set the RFM to Master Set the RFM to Slave in CPS Bus
5 - CPS line-to-line termination (120
Ω
)
ON
1
ON
1