Password protection
Password is a four-digit number. Only setpoints associated with the entered password level can be modified.
There are three levels of password protection:
0. User level allows change of non-protected setpoints only
1. Operator level allows change of setpoints protected by Operator level 1.
2. Master level allows change of setpoints protected by Operator 1. and Master level 2.
3. Supervisor highest level allows all setpoints or configuration changes, firmware upgrade.
There can be password protected:
Setpoints (depends on configuration)
Statistics values (Level 3 only)
Engine commands (depends on configuration)
Even though one level may have been set from the front panel, the affected setpoints are not
accessible from DriveMonitor (direct or Modem) until this level is set in DriveMonitor (direct or Modem).
Setpoints opened from front panel are automatically closed 15 minutes after the last key has been
depressed or when wrong value of password is set.
Password is a four-digit number. Only setpoints associated with the entered password level can be
modified.
Any password can be changed once that level password or higher has been entered.
Modbus protocol
Direct connection: RS232, RS422, RS485
Modem connection
9600, 19200 or 38400 bps, 8 data bits, 1 stop bit, no parity
Transfer mode RTU
Function 3 (Read Multiply Registers)
Function 6 (Write Single Register)
Function 16 (Write Multiply Registers)
The response to an incoming message is sent with minimum 4.096 ms delay after message reception
The complete description of Modbus communication protocol can be found in
Modbus Protocol Reference
Guide PI-MBUS-300
and
Open Modbus Specification Release 1.0
. Both documents are available from web
http://www.modicon.com/openmbus/
Modbus Multipack message
It is special communication object that contains all values that are used for History record (configurable) and
can be read by one command.
Hint:
Detail Modbus command description see in ComAp Communication guide.
Communication object vs. Register
All the data intended for communication has its representation as communication objects in the controller.
The communication object is represented by the n-byte array in the controller memory and identified by the
unique 16-bit communication object number. The register, according to Modbus communication protocol,
represents a two-byte data and in communication functions is referenced by 16-bit register address. Further
in the description of communication functions
the communication object number will always be used as
a register address
and length of the communication object will be expressed by number of registers.
Just
one communication object can be read or written by one communication function.
Hint:
It is possible to download the Actual InteliDrive controller object description corresponding to actual
configuration from on-line controller or from aid archive using DriveConfig software.
InteliDrive-DCU - Operator Guide, ©ComAp – January 2013
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ID-Operator_guide_r2.pdf
