Watlow Electric Gateway & DeviceNet manual RUI/Gateway Addressing Communications Card

RUI/Gateway & DeviceNetTM

Configuration & Ladder Logic Example

Using an Allen-Bradley CompactLogix PLC

Device	Physical Address	Logical Address (Set by User)
Personal Computers	0-3	1-4
RUI	4-11	1-8
Communication Cards	12-15	1-4(indirectly set by user)
EZ-ZONE®Controllers	16-31	1-16

The first graphic in step 35 shows the first member of the custom T to O assembly

“GTW_Inputs.Device_Status”. Interpreting the bits…bit 0 is shown on the far right where bit

31 is on the far left. The bits that are shown as being set to a “1” represent those devices that the RUI/Gateway is enabled to speak to (Gateway instance). So, bit 16 through 19 represents the PM controls on the Standard Bus side of the RUI/Gateway (1 - 4, as seen in step 17) where bit 12 represents the physical address for the DeviceNetTM card in the RUI/Gateway. Each of these bits can be monitored in the PLC where an alarm can be driven if communi- cations with any enabled PM control fails.

36.Note that in the table above (step 35) showing both logical and physical addresses (logical addresses are set by the user) that the communications card addressing is not set directly by the user. To relieve the burden of having to set multiple Standard Bus addresses in the RUI/Gateway the communication card picks up its address through the RUI/Gateway firm- ware. If the RUI/Gateway Standard Bus address (with a comms card installed) is set to logical address 1 the communications card Standard Bus physical address will automatically be set 12. See table below for valid communications card addressing. As can be seen below, if the communications card is to be given a valid address the RUI/Gateway logical address must be set to a value ranging from 1-4.

	RUI/Gateway Addressing		Communications Card
	Standard Bus	Logical Address	Physical Address
	Physical Address	(Set by User)
	4	1	12
	5	2	13
	6	3	14
	7	4	15
	8	5	Not Valid
	9	6	Not Valid
	10	7	Not Valid
	11	8	Not Valid
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© 2007 Watlow Electric Mfg Co		19	4/08