Vhandy Technology GC-4642 user manual
Group 1 signal voltage output
Group 1 signal reference ground
Group 2 signal voltage output
Group 2 signal reference ground
Table 2.1 GC-4642 module indicator
2.3 System status indicator
The GC-4642 module has 4 operating indicators to indicate the operating status
of the device. The specific indication function of the indicator light is shown in
Table 2.2. When the indicator is on, the GC-4642 module status is shown in
Table 2.3.
Table 2.2 GC-4642 module indicator
When the output signal of the GC-4642 module is activated, the operation
indicator will light up.
Output signal is not activated
Table 2.3 GC-4642 module indicator status
2.4 Use in combination with PLC400/510 series
GCAN-PLC-400/510 supports programming in five languages. The following
takes ST language as an example to introduce how to use GCAN-PLC-400 to
program and write the status of the analog output of the GC-4642 module.
When the GC-4642 module performs ST programming definition, it is
necessary to define the variable type, output signal position, start character,
separator, etc. For example: "AO AT%Q0.0:INT;", where "0.0" represents the
start address of the first channel, each channel occupies 2 bytes, 0~20mA
corresponds to 0~65535, so the start address of the second channel The starting
address is Q2.0. When the user uses more than one GC-4642 module, the
second GC-4642 needs to be defined from "Q4.0", because each 4642 has 2
channels; "%" (percent sign) is the direct variable start symbol : ":" (semicolon)
is a variable or type separator. Use symbolic variable AO to write unsigned
