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Installation and Operation Manual
X-DPT-DeviceNet-SLA5800-SLAMf-Series-RevB-PC-eng
Part Number: 541B200AAG
March, 2015
12
Section 3 - Quick Start
Brooks DeviceNet PCs
3.7. Step 7: Begin Scanning the Network
Enable the scanner to begin scanning the network. If the NET LED on the PC
goes to solid green, the scanner has connected to the PC and is now actively
polling the PC. Each poll request to the PC contains a setpoint value, and
each poll response from the PC contains Status and Pressure information. If
the NET LED does not maintain a solid green status while the scanner is
actively scanning the network, consult Appendix D for LED flash codes or go
to the Troubleshooting section.
3.8. Step 7: Normal Operation
During normal operation the device will change states between either the Idle
or Executing states. The current state of the device can be determined by
inspecting the Device Status attribute from the S-Device Supervisor instance
one [0x30-1-11]. A value of two indicates the device is in the Idle state and a
value of four indicates the device is in the Executing state.
The device will be in its safe mode when Idle and the control loop for control
type devices will be inactive. The device can be transitioned into the
Executing state by either sending the S-Device Supervisor a start service or
when the first valid Poll I/O message is received.