Interface And Outputs - IKA KS 4000 i control Manual

Error code Description
PC 1 In remote operation (PC) with
watchdog function 1 enabled:
No communication between
PC and unit
PC 2 In remote operation (PC) with
watchdog function 2 enabled:
No communication between
PC and unit

Interface and outputs

Configuration
The unit can be controlled from an external PC (using the dedi-
cated software labworldsoft) via the RS 232 C serial interface
fitted to the unit.
To increase safety when controlling the shaking unit from
a PC, enable the watchdog function for monitoring the
continuous serial data flow (see section watchdog func-
tion)
• The functions of the inteface lines between laboratory in-
strument and automation system are selected from the
specfied signals of the EIA-standard RS 232 C, corresponding
with DIN 66020 Part 1. The allotment of the bushing can be
taken from illustration.
• For the electrical properties of the interface lines and for the
allotment of the signal status, standard RS 232 C, corres-
ponding with DIN 66259 Part 1 applies
(see capture PC 2.1 cable).
• Transmission method:
26
Cause
• PC does not send data during the
watchdog time
• The connection/cable to the PC is
broken
• PC does not send data during the
watchdog time
• The connection/cable to the PC is
broken
Asynchronous signal trans-
mission in start-stop-operation
Effect
Heating off
Motor off
The setpoint temperature • Change the watchdog time
is set to the WD safety
temperature
The setpoint speed
is set to the WD safety
speed
• Mode of transmission: Fully Duplex
• Character format: Character imaging acc. to data
format DIN 66022 for start-
stop-operation. 1 start bit;
7 character bits; 1 parity bit
[(straight (even)]; 1 stop bit.
• Transmission speed: 9600 bit/s
• Access method: Data communication from
shaker to computer is only
possible on demand of the
computer.
Instruction syntax
Here applies the following:
• The instructionsare generally sent from the processor
(master) to the laboratory instrument (slave).
• The laboratory instrument exclusively sends on demand of
the processor. Even error codes cannot be spontaneously
communicated from the laboratory instrument to the proces-
sor (automatic system)
•Instructions and parameters as well as subsequent para-
meters are separated by at least o n e blank.
Solution
• Change the watchdog time
• Send data from the PC within the
watchdog time
• Check the connector cable and plug
• Send data from the PC within the
watchdog time
• Check the connector cable and plug
(Code: hex 0x20)