GEM80-400 2. Controller Architecture and Program Operation
Issue 3 04/99 ALSPA GEM80-400 SERIES CONTROLLERS TECHNICAL MANUAL Page 2-7
programming tool, such as Gemesys 3, if connected. These 'states' are defined as
follows:
2.4.1. Halted, Normal Inputs
Inputs are being read into input tables.
Outputs are set to values in output tables.
Controller watchdogs are open.
User program is scanned once when the program is single cycled.
Programming activity ( local or remote ) is active
ESP Control and Tributary activity is suspended
Terminal and Printer activity is suspended
GEMSTART CCU communications are suspended.
Controller display: "Halt".
2.4.2. Halted, Test Inputs
Inputs are not being read.
Outputs are set to values in output tables.
Controller watchdogs are open.
User program is scanned once when the program is single cycled.
Programming activity ( local or remote ) is active
ESP Control and Tributary activity is suspended
Terminal and Printer activity is suspended
GEMSTART CCU communications are suspended.
Controller display: "THlt".
2.4.3. Running, Normal Inputs
Inputs are being read into input tables.
Outputs are being set to values in output tables.
Controller watchdogs are closed.
User program is being scanned continuously.
ESP, terminal and printer ports are functioning.
GEMSTART CCU communications are functioning.
Controller display: "Run".
2.4.4. Running, Test Inputs
Inputs are not being read.
Outputs are being set from output tables.
User program is being scanned continuously.
Controller watchdogs are open.
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