Chapter 5 ________________________________________________________________ Operation
VAISALA_______________________________________________________________________ 55
CHAPTER 5
OPERATION
This chapter contains information that is needed to operate this product.
Operation Modes
There are two operation modes, normal and standby. The set oper_mode
normal and set oper_mode standby commands are used to switch
between the modes. In the normal mode, continuous measurement and
message transmission occurs according to the chosen parameters. The
standby mode, which involves turning off the wearing parts, can be used
during periods when measurement is not needed.
0406-020
Figure 20 Operation Modes
Serial Lines - Open and Closed Port
As shown in Figure 11 on page 34, there are two line outputs in CL31,
the maintenance line (external connector J4) and the data line (external
connector J3). The data line is intended to be used for measurement data
communication and can be operated through a modem or a serial line
(RS-232 or RS-485). The maintenance line is intended for on-site
maintenance access, and is used only as a RS-232 serial line.
Functionally the operation of the two lines is identical, that is, the same
commands, operations, and messages operate through both lines.
The factory default setting is 8 data bits, no parity, 1 stop bit and 9 600
bps (for maintenance line), 19 200 bps (for data line). The bit rate can be
selected from the user menu.
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