Table of Contents
Mode Name
OFFLINE
Note 1: The Off state of the module outputs are defined as:
Digital output - low state
Time proportional Output (TPO): 0% duty cycle
PPO and TPSC Outputs: Both Fwd and Rev are Off.
Analog output: 0.0 mA
Note 2: The Frozen states of module outputs are defined as:
Digital output: same state as previous (last active state)
Time Proportional Output (TPO): Same duty cycle as in last active state
PPO and TPSC Outputs: digital outputs are Off to freeze the motor position.
Analog output: same current as previous (last active current level)
Controller Mode Transitions
Mode changes are controlled primarily by positioning of the MODE switch (
Figure 97) on the controller module or RSM, and secondarily by selection of mode names on operator
interface displays. That is, the Mode switch takes precedence. In the RUN (Locked) position or in the
PROG (Locked) position, selecting a mode name at the operator interface has no effect on the operational
mode. In the RUN/PROG position, the mode may be changed from any mode to any other mode.
The effects of the Mode switch operator interface selections are described in
172
ControlEdge HC900 Process & Safety Controller User and Installation Manual
Functions in selected mode
IO scanning (Controller and Expander Racks) is performed, but function blocks are
not executed, and all outputs (digital and analog) are Frozen (see Note 2) at the
states they were in when the OFFLINE mode was selected.
Monitoring of Diagnostics (local and expanded racks)
Detection of I/O Modules
Other functions permitted:
AI calibration
Indications of Force at Status LEDs of I/O modules
Other function NOT permitted: AO calibration
Revision 10
May 2019
- Quick Links:
- Model Selection Guide
Hide quick links:
Table of Contents
