7 setting the dip-switches on the tp-185, 1 setting the rs-485 bus termination, 2 enabling and disabling the reply feature – Kramer Electronics TP-185 User Manual

Page 13: Setting the dip-switches on the tp-185, Setting the rs-485 bus termination, Enabling and disabling the reply feature, Figure 4: tp-185 dip-switch rs-485 termination, On 7.1.1, On 7.1.2, N 7.1.1

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Setting the DIP-switches on the TP-185

Setting the DIP-switches on the TP-185

The DIP-switches on the TP-185 perform the following functions:

• RS-485 termination
• Reply enable/disable
• Reply machine number
• Baud rate
• Hardware/software mode

Moving a DIP-switch down turns the switch on, moving it up turns the switch off.

Note: Changing any DIP-switch requires that you cycle power on the TP-185

7.1.1

Setting the RS-485 Bus Termination

The DIP-switch sets the RS-485 bus termination. Only the first and last physical
device on the RS-485 bus must be terminated, all other devices must be
un-terminated.

Figure 4: TP-185 DIP-switch RS-485 Termination

When DIP-switch 1 is:

• OFF, the unit is un-terminated (default)
• ON, the unit is terminated

Note: DIP-switch 2 is not used.

7.1.2

Enabling and Disabling the Reply Feature

DIP-switch 1 enables and disables the Reply feature.

Figure 5: TP-185 Reply Enable and Disable DIP-switch