NEC FC-9801F Serial control module

Power Requirements Before installation, make sure your modular SLC power supply has adequate reserve current capacity. The 1747-DCM requires 360 mA at 5V dc. Each fixed SLC 500 controller can support one 1747-DCM in a 2-slot expansion chassis, depending on which I/O module is in the second slot. See Discrete Input and Output Modules Technical Data, publication number 1746-2.35 for details

1.Disconnect power. 

2. Press the releases at the top and bottom of the module and slide the module out of the chassis slot. 

3. Cover all unused slots with the Card Slot Filler, catalog number 1746-N2.

Installation 

1. Disconnect power.

 2. Align the full-sized circuit board with the chassis card guides. The 1747-DCM must not be installed in slot 0. The first slot (slot 0) of the first chassis is reserved for the CPU. 

3. Slide the module into the chassis until the top and bottom latches are latched. 

4. Attach the RIO link cable to the connector on the front of the module. 

5. Insert the cable tie in the slots. 

6. Route the cable down and away from the module, securing it with a cable tie. 

7. Cover all unused slots with the Card Slot Filler, catalog number 1746-N2.

Network Wiring 

A ½ Watt terminating resistor must be attached across line 1 and line 2 of the connectors at each end (scanner and last physical device) of the network. The size of the resistor depends upon the baud rate and extended node capability, as shown in the table below.Cycle power to the I/O chassis containing the 1747-DCM. Replace the 1747-DCM if red LED remains lit after power-up. Flashing Configuration Error Check that the DIP switch settings are correct. Make sure that I/O group and chassis size settings are compatible.(1) Also see that the setting for chassis address is correct.

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