Rockwell Automation 1771-SPI,D17716.5.122 SPI PROTOCOL INTERFACE - Manual (Page 19)

Important Information That You Need
to Set Up the SPI Network
Chapter 2
2-5
Informational Requirements for an Example SPI Network
To summarize the informational requirements, we present an example
3-device SPI network.
Hot Runner
Temperature
Controller
Block
Transfers
Melt Pump
Controller
Dryer
Controller
PLC-5 Processor SPI Module
1771 I/O Chassis
command data sent by BTW
status data received by BTR
Command words (by BTW) that set
- device on or off
- temperature setpoint
- high deviation alarm
- low deviation alarm
Status words (by BTR) that report
- device on or off
- process temperature
- high deviation alarm
- low deviation alarm
Command words that set
- device on or off
- pressure setpoint
- high deviation alarm
Status words that report
- device on or off
- process pressure
- high deviation alarm
Command words that set
- device on or off
- temperature setpoint, zone 1
- temperature setpoint, zone 2
- high deviation alarm
- low deviation alarm
Status words that report
- device on or off
- process temperature, zone 1
- process temperature, zone 2
SPIĆassigned device type ID = 22
Device address that you select = uu
Communication rate that you select = xxxx
Configuration of the SPI module includes
- communication rate for the SPI network
- device ID and address of each device
- order in which devices are polled by the SPI module
- number, type, and SPI codes of all words to be sent (by BTW)
- number, type, and SPI codes of all words to be received (by BTR)
SPIĆassigned device type ID = 24
Device address that you select = vv
Communication rate that you select = xxxx
SPIĆassigned device type ID = 26
Device address that you select = ww
Zone 1 address that you select = yy
Zone 2 address that you select = zz
Communication rate that you select = xxxx