PC Control / Profi Control 645-12M Instruction Manual pdf - Kuhnke
PC Control / Profi Control 645-12M Instruction Manual pdf - Kuhnke
PC Control / Profi Control 645-12M Instruction Manual pdf - Kuhnke
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Hardware<br />
3.6. Memory<br />
<strong>PC</strong> <strong>Control</strong> <strong>645</strong>-<strong>12M</strong> has large memory ranges:<br />
-- Flash EPROM, 512 kbyte *)<br />
For: program and permanent data<br />
-- RAM, 256 kbyte *)<br />
For: variable data, operand ranges<br />
-- Dual-Port-RAM, 16 kbyte<br />
For: data communication with the <strong>PC</strong> via the ISA interface<br />
-- PROFIBUS process image<br />
For: status image of decentralised I/Os<br />
*)<br />
Some of the memory is reserved for the monitor program.<br />
Please refer to chapter "4.3. Memory settings" to learn<br />
how much user memory is available<br />
3.7. NiCd accumulator<br />
<strong>PC</strong> <strong>Control</strong> <strong>645</strong>-<strong>12M</strong> has a NiCd accumulator for buffering<br />
defined RAM areas. In the PLC these are the remanent<br />
markers, i.e. bit and byte ranges that are not reset in Reset<br />
events (see above).<br />
Max. buffer time is about 36 days at an ambient temperature<br />
of 0...40 °C.<br />
Due to different lengths of time spent in the warehouse the<br />
charging state of the accumulator is undefined at the time<br />
of delivery.<br />
Please supply the device with voltage for at least 72 hours<br />
to charge the accumulator.<br />
In chapter "4.5.1.2. Accumulator function test" you will<br />
find a program suggestion for testing the accumulator functions.<br />
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