Instruction Manual

HMP230 SERIES

User's Guide M210225en-B

GND

HMP 230

D9S

D25S

D25P

TXD

RXD

TXD

RXD

TERMINAL

Figure 26 Connection of cables

When the serial bus has been connected between the PC and the transmitter,

the PC is switched on. When using a PC, a terminal emulation program (e.g.

Procomm Plus, Datastorm or Windows terminal) is started.

The factory settings for data transfer are:

• 4800 baud

• even parity

• 7 data bits

• 1 stop bit

• full duplex

NOTE

When the serial bus settings are changed, the transmit-

ter has to be reset before the new settings become ef-

fective.

The processor does not allow the following combinations:

• no parity, 7 data bits, 1 stop bit: if this combination is given the

HMP230 program will change the number of stop bits to 2

• even or odd parity, 8 data bits, 2 stop bits: if this combination is given

the program changes the number of stop bits to 1

Refer to the manuals of the PC and the terminal emulation program when

giving serial settings.

The RS 232C screw terminal cannot be used if an RS 485/422 serial module

or a current loop module is used. See Appendices 3 and 4 on how to install

and operate these modules.