Cameron NUFLO MC-III EXP, User Manual

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D-4
Appendix D MC-III™ EXP Flow Analyzer
System Configuration
Register
(Decimal)
Register
(Hex)
Description
Data
Type
Access Default
1016 03F8
LCD Contrast
[0-31]
U16 R/W 6
Product Code (register 1000)
The Product Code is a read-only parameter used for identification. This parameter is set at the factory and it
will always read 0x40 hexadecimal (64 decimal).
Firmware/Register Table Version Numbers (registers 1001, 1002)
The Firmware Version and Register Table Version numbers are unsigned 16-bit integers. These parameters are
set at the factory and are read-only. To determine the firmware version number, read the appropriate register
and divide the value read by 100. The general format for firmware version numbers is A.BC. For example, the
firmware register number is read as 0xA7 hexadecimal. This represents 167 and a firmware version of 1.67.
Manufacture Date/Sales Date (registers 1003, 1004)
These parameters are set at the factory and are read-only. These registers are formatted as MMYY. For
example, a value of 0905 represents the date September 2005.
Slave Address (register 1009)
The Modbus
®
slave address is an unsigned word (U16) data type that has a range of values from 1 to 65535,
not including 252 through 255 or 64764. The slave address is configured from a laptop or via the keypad and
is stored in nonvolatile memory.
Important: All MC-III devices will respond to addresses 252 through 255 and 64764, and the
response will always be at a baud rate of 9600 baud. For this reason, addresses 252
through 255 and 64764 are reserved and should never be used.
When the slave address is written, the response message will be at the current address. After the response
message is transmitted, the MC-III will change to the new slave address.
Baud Rate (register 1010)
The baud rate is an unsigned word (U16) data type that sets the data rate on the serial port. When the baud rate
is written, the response message will be at the current baud rate. After the response message is transmitted, the
MC-III will change to the new baud rate.