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APPX
Appendix 1 I/O Signals
APPENDIX
Appendix 1 I/O Signals
This section explains the input/output signals of the BACnet module.
The following shows the example of I/O signal assignment when the start I/O number of a BACnet module is '0'
Device X is the input signal from a BACnet module to a CPU module.
Device Y is the output signal from a CPU module to a BACnet module.
Do not output (turn ON) the signal of "Use prohibit" among the input/output signals for a CPU module.
Doing so may cause the malfunction of a programmable controller system.
List of I/O signals
The following shows the list of the input/output signals of a BACnet module.
For details on the input/output signals, refer to the following sections.
Page 249 Details of input signals
Page 250 Details of output signals
Input signal
Output signal
Device No. Signal name
X0 Module READY
X1 Initialization complete/operation stop or restart
X2 BACnet status (join/leave)
X3 Buffer memory access
X4 Use prohibited
X5 Time synchronization send complete
X6 Who-Is send complete
X7 to XE Use prohibited
XF Error occurrence
X10 to X1F Use prohibited
Device No. Signal name
Y0 Use prohibited
Y1 Joining of BACnet
Y2 COV/Event send prohibited
Y3 Schedule execution prohibited
Y4 Use prohibited
Y5 Time synchronization send request
Y6 Who-Is send request
Y07 to Y1F Use prohibited
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