SUNSTONE CDDP-A - Reading a Holding Register

Questions? Call or Text +1-801-658-0015 • 47
e Micro Welder Experts
• Set the No. of Coils to 23.
• Change Function code to 1.
• Change the Register Size to 1 bit coils.
• In the Copy Down cell (labeled as (F) in Figure 46.1), change the input to 8 boolean. See Figure 47.2.
• Click Send to send the instructions to the CDDP-A.
The code will appear as displayed in Figure 47.3. Notice in the row with register 40000 the results cell has 1110
1010, which represents the rst eight coil states. The least signicant bit is coil 0, so Pulse 1 Power Compara-
tor Enable is O “0b0”. The next row has the next eight coil states and starts with register 40008 which is coil
8 Comparator Action after Pulse 1 and it is also O “0b0”. The next row starts with register 40016, coil 16, or
Alarm – Trigger Enable.
Discrete inputs are accomplished in the same manner as described for coils; however, you must change the
Function Code to 2.
READING A HOLDING REGISTER
To read from a holding register, and with the CDDP-A connected, refer to Figure 48.1 and follow these instruc-
tion:
• Change the No. of Reg to 36.
• Change Function Code” to 3.
Figure 47.1.
Figure 47.2.
Figure 47.3.