Error Description; Interface And Outputs; Configuration - IKA KS 4000 i control Mode D'emploi

Error Description
code
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 dedicated 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 function)
• The functions of the inteface lines between laboratory instrument and automa-
tion 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, corresponding with DIN 66259 Part 1 applies
(see capture PC 2.1 cable).
• Transmission method: Asynchronous signal transmission in
start-stop-operation
• Mode of transmission: Fully Duplex
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
Effect
Heating off
Motor off
The setpoint temperature
is set to the WD safety
temperature
The setpoint speed is set to
the WD safety speed
• Character format:
• Transmission speed:
• Access method:
Instruction syntax
Here applies the following:
• The instructions are 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 instru-
ment to the processor (automatic system)
• Instructions and parameters as well as subsequent parameters are separated by
at least one blank.
Solution
• Switch off the unit. Allow it to cool down
and then switch on again.
• Clean ventilation slots or fan housing
• Observe maximum permissible ambient
temperature
• Change the watchdog time
• Send data from the PC within the watchdog
time
• Check the connector cable and plug
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.
9600 bit/s
Data communication from shaker to computer
is only possible on demand of the computer
(Code: hex 0x20)
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