Hach-Lange SC 1000 - Manual (Page 146)

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A.3 Attach the base module
The base module provides a connection for a display module and contains a connection
and the terminating resistor for the sc1000 network. The LED on the front indicates the
status of the network communication.
The base module is required for any additional modules.
Prior to installing the base module, make sure the DIN rail is mounted correctly and that
all safety requirements are met.
1. Deactivate the switch (network termination) on the module ( Figure 76 ).
2. Remove power and disconnect all cable connections to the module.
3. Place the Base Module on the DIN rail.
4. Make the connections as shown in Figure 77 and Table 50 .
Figure 75 Attaching multiple expansion modules
Figure 76 Switching the network termination
1 Network termination activated, last device on network. 2 Network termination deactivated, other devices on
network after this device