i4MC&V/EN M/C User Manual
iSTAT i4MC&V
Page 17
3.6 Communication
The setting
s displayed depend on the hardware options on the specific instrument connected
or the settings in the specific settings file that is being worked on off-line.
3.6.1 Serial Communication parameters (COM1)
These parameters are important for the correct operation in RS485 networks or connections
with PC via RS232 communications. Factory settings for communication are #33\19200 (or
115200),n,8,2 (address 1 to 247\data rate 2400 to 115200 b/s, parity, data bits, stop bit).
3.6.2 Modbus Table of Addresses
With this setting a MODBUS table for measurements and settings is defined. MODBUS
addresses for measurements and settings can be compatible with previous family of
transducers (i400) or with the more advanced family of transducers (i500).
3.6.3 USB Communications
The transducer will be identified as a USB device when connected to a USB port on the PC,
refer to the separate QDSP manual for details of the driver installation.
Note: The USB port has only Basic Insulation and can only be used
when there is no wiring connected to the main terminals.
Note: The Cover over the USB connector must be fitted prior to
installation or storage, if not the Warranty on the product will be void.
3.7 Security
Parameter settings are divided into 2 groups regarding security level:
1. If the passwords are set to ‘AAAA’ (default) there is no restriction to the access of
parameter settings.
2. At the first level (PL1), the settings for MD can be accessed.
3. At the second level (PL2), access is given to all parameter settings.
4. A Backup password (BP) is used if the passwords at level 1 (PL1) and level2 (PL2)
have been forgotten, and it is different for each device depending on the serial number
of the instrument. The BP password is available from the customer support
department of Alstom Grid, and is entered instead of password PL1 and/or PL2. The
serial number is stated on the product label or can be read with QDSP and must be
supplied when requesting the BP.
3.7.1 Password setting
A password consists of four capital letters taken from the British alphabet from A to Z. When
setting a password, only the letter being set is visible, while the others are covered with an
asterisk.
Two passwords (PL1, PL2) and the time after which they become active, can be set.
3.7.2 Password modification
A password can be modified; however only the password whose access has been unlocked
(password entered) can be modified.
To disable a password previously set, modify the password back to ‘AAAA’.
3.8 Analogue output
3.8.1
Analogue output module
The analogue output is fully programmable.
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