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SUNSTONE CDDP-A USERS GUIDE
• You will then need to check the box next to “01 Read
Discrete Outputs”. Once checked, the Send button is
not greyed out anymore.
• Click the Send button.
• The request, denoted as “Req,” is displayed on the main
window along with a response, denoted as “Resp.” On
the response line, look at the last two bytes of informa-
tion with the response of 0x01, representing “True,”
that Pulse 1 Power Comparator is enabled. On the weld-
er’s Home screen, with the Comparator tab selected,
you will see that Pulse 1 Power Comparator is enabled.
• Disable Pulse 1 Power Comparator on the welder by
going to the Comparator screen on the welder and
toggling to “off”.
• Click the Send Frame icon. See Figure 37.2.
• In the Send New Frame window (Figure 38.1), click on
the Send button to send the same request as before.
• Notice now, in the main window, that the response in
the main window is 0x00 False and the Pulse 1 Power
Comparator is disabled.
SENDING INFORMATION TO THE CDDP-A
• Press the “Send Frame” icon
• Keep the default settings of “1” Times with “100” ms of
Delay. Click on “05 Write Single Output”. The Request
Data window will appear. Enter a function code, output
address, and output value, as shown in Figure 38.2.
• Keep the function code “05”, which if you look at the
Modbus documentation for the CDDP-A is for the
“Write Single Coil” function. If you go further into the
Modbus document you will find a Coils Table on page
61 that defines what coil is written to the CDDP-A when
writing to coils 0 through 23. If you choose “0000” as
the output address and “ON” as the output value, the
“Pulse 1 Power Comparator Enable” is enabled.
• Click Finish when you’ve entered all data. The Send New
Frame window re-appears. Check the box next to “05
Write Single Output”. Once checked the Send button is
active, as shown in Figure 38.3.
Figure 38.1. Send New Frame window.
Figure 38.2. Request Data window.
Figure 38.3. The Send button becomes
active when you select a Function Code.
