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12-20-2002
Figure Sheet 1-851-A
Page 31
CDP-01 LED Panel Data
To make remote control complete, we must have a way to duplicate the CDP-01 panel LED’s. The
CDP-01 keypad contains integrated LED’s to indicate operating modes, sensors selected, and many
other parameters. The CDP-01 can be configured to send its panel LED data over FifeNet so that
remote devices can duplicate the CDP-01 panel state. We have to look a little deeper to understand
how to use this capability.
Since there are 31 LED’s on the CDP-01 panel, the information has to use the multiplexed mode to
send all the LED states. The CDP-01 sends the panel data in two parts: Input Registers 0x403 and
0x404 as shown in Section 5, Status Data Block. The first word (Input Register 0x403) contains the
state of 15 panel LED’s, while the second word (Input Register 0x404) contains the remaining 16 LED
states. The logic is negative so a bit that is zero indicates that this LED is on.
By using the panel data, the setup procedures in the CDP-01 reference manual can be monitored to
ensure proper sequence of steps.
Figure 6-3: CDP-01 LED Panel Data