Michell Instruments Cermet II, Руководство пользователя

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Cermet II User’s Manual
20 97049 Issue 25.3, October 2016
OPERATION
3.6 Display Brightness Adjustment
1. To adjust the display brightness press the SETUP and

buttons
simultaneously.
2. The display toggles between [ bri ] and [ 5 ], where 5 is the default
setting.
3. Adjust the display brightness required (from 0 to 7) by pressing the

or

buttons.
4. Press
SETUP
seven times to exit the programming mode.
3.7 Digital Communications
The monitor is fi tted with ASCII RS232 communication interface as standard (RS485
optional). Communication settings are found as follows:
1. Set CAL to 100.
2. Press
SETUP
once and then the

or

buttons to change the baud rate.
Baud rates are 300, 600, 1200, 2400, 4800, 9600, 19,200 and 57.6 K.
3. Press
SETUP
again to advance to the parity bit and then the

or

buttons to change the parity bit. Parity settings are odd, even or off.
4. Press
SETUP
again to advance to the address settings. Address settings
are 0 to 255. NOTE: address 0 is not a valid RS485 address.
5. Press SETUP again to return to CAL.
The default communication con fi guration is:
Baudrate 9600
Data bits 8
Parity none
Flow control none
The commands used to read and write to the monitor follow the protocol shown below:
Start Character
s
or
S
for the start character (must be fi rst character in
string).
Meter Address An ASCII number from
0
to
255
for the meter address.
Read/Write The next character must be an ASCII R or r for read, or an ASCII W
or
w
for write. Any other character will abort the operation.