Allen-Bradley Powermonitor 3000 User Manual page 99

Communications 4-39
communications, using peer-to-peer message instructions. In the
message setup, specify the controller data table address, size of the
data in elements and the channel the message instruction is to use.
For the target device (Powermonitor 3000), specify its IP address and
data table address. In the example message setup dialog below, the
SLC 500 controller is reading the Power table (F17:0) from a
Powermonitor 3000 with IP address 192.1.1.207.
Figure 4.4 SLC 5/05 to Powermonitor 3000 Message Detail Screen Example
If you want to execute a sequence of messages, condition each
message in the sequence with the previous message's done or error
status, and include a brief programmed time delay between messages
so that each message receives fresh data and the communications port
is not overloaded. As a starting point, program the inter-message time
delay at the nominal update rate of the Powermonitor 3000 (see page
3-33).
For PCCC/CSP messaging, set the Optional Communications Protocol
configuration (Series A only) to either CSP or CSP/CIP. Neither a Series
A Powermonitor 3000 with protocol set to CIP only nor a Series B
Powermonitor with comms firmware 1.21 or earlier will respond to
messages using the PCCC/CSP protocol.
EtherNet/IP (CIP) Protocol
Allen-Bradley controllers since the release of the ControlLogix
platform have used the EtherNet/IP or CIP protocol. In particular,
PLC-5 and SLC 5/05 controllers at or later than the following series
Allen-Bradley HMIs
and revision levels support CIP communications:
Publication 1404-UM001D-EN-E - October 2004