IGS-NT-BC, SW Version 1.2.0,
©ComAp – January 2019
IGS-NT-BC-1.2.0 Reference Guide.PDF
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Setpoints
Setpoints are analog, binary or special data objects, that are used for adjusting the controller to the specific
environment. Setpoints are collected to groups according to their meaning. Setpoints can be adjusted from
the controller front panel, PC, MODBUS etc.
Password protection
Any setpoint can be password protected - 7 levels of protection are available. There can be up to 8 users
defined, each one with different access rights (levels of protection). Every user has it’s own password. The
password is a four-digit number. Only setpoints protected by the protection level that is covered by currently
logged-
in user’s access rights can be modified.
If a user logs in from a particular terminal (e.g. the controller front panel), this does not unlock the other
terminals for him, e.g. InteliMonitor connected directly or via modem.
Setpoints opened from front panel are automatically closed 15 minutes (return to measurement screens)
after the last setpoint change or when wrong value of password is set.
System administrator (User 0
– always present in the system) can reset the password for any other user.
The controller programming (configuration) requires the highest - password 7 level, so only User 0 is able to
modify the controller configuration or firmware.
Continuous internal evaluation of setpoints validity
In case of detection of Setpoints checksum (validity) evaluation error, the Shutdown alarm “Setpoint CS
error” is issued to prevent the controller to run the engine with incorrect setting. The evaluation is provided at
controller startup and continuously during the standard operation. I.e. in case of detection of such error, the
engine is shut down immediatelly.
Setpoint synchronization
Setpoints, that are marked with "#" sign at the begin of their names, are synchronized with other controllers
present on the CAN bus line, i.e. the system will ensure that the respective setpoint will have identical value
in each connected controller. If the setpoint is changed in one controller, the same change will occur in all
other controllers. This function is necessary especially for MINT application, where the system of Power
management is based on fact that the respective setpoints are identical in all controllers.
C
AUTION
!
Do not perform repeated writing of setpoints (e.g. power control from a PLC by repeated writing of baseload
setpoint via Modbus) The setpoints are stored in EEPROM memory, which can be overwritten up to 10
5
times without risk of damage or data loss, however it may become damaged, when allowed number of
writing cycles is exceeded!
