GE GFK-2193A user manual Network Baud Rate, Removing the Module from the Rack

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Note: For proper network termination, it is essential that the terminating devices maintain power. Power is provided by the device on Pin 6 and Ground on Pin 5. If power is lost to either terminating device, the network may not operate correctly. Generally, the lone network master device is one of the terminating devices. Therefore, a loss of power to the network master renders the network inoperable anyway. The other terminating device may be a critical slave device, which must maintain power, or a separately powered, stand-alone terminator. These stand-alone devices are commercially available.

VP (6)

Ru = 390 Ohms

RxD/TxD-P (3)

Rt = 220 Ohms

RxD/TxD-N (8)

Rd = 390 Ohms

DGND (5)

Figure 2-1. Bus Termination for Type A Cable in Accordance to PROFIBUS Specifications

In addition to the termination shown above, the following compensation should be added for 12 Mbit bus technology:

	9	5
110nH		4	110nH
	8
To/from		3	To/from
another	7		another
node	6	2	node
110nH		1	110nH

Network Baud Rate

The master configures the appropriate network baud rate for each station on the network. Typical baud rate values are: 9.6KBps; 19.2KBps; 45.45KBps; 93.75KBps; 187.5KBps; 500KBps; 1.5MBps; 3MBps; 6MBps; or 12MBps. For details on using the configuration software, refer to chapter 3.

Removing the Module from the Rack

The following procedure describes how to remove the GE Fanuc Series 90-30 master:

1.Turn off power to rack.

2.Remove all cabling from the module.

3.Press the release latch located on the bottom of the module and slowly raise the module from the bottom until it comes out of the slot.

2-4 Series 90™-30 PROFIBUS Slave Module User's Manual – August 2004 GFK-2193A