GBS Elektronik MCA-527 Firmware Commands - Manual (Page 24)

MCA527
Command name CMD_SET_EXTENSION_PORT (Continuation)
Remarks The parts of the extension port are attached to the following pins.
Full version OEM version
Part A: pin 1 pin 3 RS232 RX
pin 2 pin 7 RS232 TX
Part B: pin 4 pin 19 RS232 TX (TTL), pulser2 or output2
Part C: pin 5 pin 21 RS232 RX (TTL), counter2, trigger2 or input2
Part D: pin 7 pin 22 pulser1 or output1
Part E: pin 6 pin 25 counter1, trigger1 or input1
Part F: pin 8 pin 26 5V / 100mA power output
Command name CMD_SET_EXTENSION_POLARITY
Compatibility New MCA527 command.
Execution right Necessary
Description The command sets the polarity (pol) for the parts (part) of the extension port.
part:
1 = part B
2 = part C
3 = part D
4 = part E
pol: 0 = positive or rising edge
1 = negative or falling edge
Format integer integer integer integer integer integer
Parameter preamble command part pol 0 end flag
Byte string (HEX) A5 5A 1B 01 part 00 pol 00 00 00 B9 9B
Command name CMD_SET_EXTENSION_PULSER_PERIOD
Compatibility New MCA527 command.
Execution right Necessary
Description The command sets the pulser period (p) for the parts (part) of the extension port.
part:
1 = part B (pulser2)
3 = part D (pulser1)
p: The pulser period must be larger than the pulser width (see next command). If the
parameter does not meet this condition, the command will return “invalid parameter”.
Pulser 1:
2 … 4294967295 * 10 ns
Pulser 2 29 : 2 … 4294967 * 10 µs
Format integer integer integer long integer
Parameter preamble command part p end flag
Byte string (HEX) A5 5A 1C 01 part 00 p
l
... ... p
h
B9 9B
29 The both pulsers work differently. Pulser 1 works very quickly and exactly because it is realized in hardware. Pulser 2, however,
is realized in firmware, wherefore it is less quickly and exactly, and it occupies additional system resources. For this reasons
pulser 1 should be preferred.
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