Rs 232 Interface Connection; Fig. 18 Rs 232 Interface - Kendro HERAcell 240 Operating Instructions Manual

®
HERAcell 240 CO Incubator Operating Instructions
2
6. Initial Setup
6.5

RS 232 Interface Connection

The RS 232 interface is designed to accept a cable
with a 9-pin plug and 1:1 contacts.
Unit connection:
1. Switch the PC off.
2. Insert the plug of the serial interface cable [2] (not
supplied) into the port [1] on the CO
circuit cabinet on the rear of the unit.
3. Insert the plug [3] at the other end of the cable
into an open serial port on the PC, COM 1/COM
2, etc..
4. Switch the PC on.
Transfer Protocol
The interface must be configured as follows:
9600 Baud, 8 data bits, 1 stop bit, no parity.
Command Sequence
Data is exchanged by means of a defined structure of
command sequences (frames).
Frame structure:
<STX | command | data | BCC | ETX>
Command:
Bit 0 - 3 = Data field length, in bytes
Bit 4 - 7 = Command
Checksum:
BCC = 1 - complement
(command XOR data1 XOR ... XOR dataN
XOR FF )
H
Version: 03.2001 / 50065640
Fig. 18, RS 232 interface
incubator's
2
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Figure 18