Lyntec RPC - Manual (Page 49)

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Appendix B
Checksum Checksum is optional. It is calculated as a sum of all bytes of the
message starting with start byte and ending with checksum
identifi er. Checksum is transmitted as a sequence of 3 bytes,
where 1st byte is (hundreds+0xCD), 2nd byte is (tens+0xCD) and
3rd byte is (units+0xCD). For example, checksum=137 will be
transmitted as:
0xCE, 0xD0, 0xD4
TCP/IP PROTOCOL
Notice: Lyntec RPC fi rmware version 1.18a or later
is required to implement this scheme. For technical
assistance please call 800-724-4047.
TCP/IP communications and control via a third party control
system is facilitated by the use of the HTTP GET command.
Example of GET command:
GET /p2.rpc?IPB002=1
Three modes of control are:
Breaker control = “B” Zone control = “Z” Event Control = “E”
Refer to LynTec RPC browser set-up for breaker numbering
GET /p2.rpc?IPB002=1
This control string will turn breaker #2 on.
GET /p2.rpc?IPB002=0
This control string will turn breaker #2 off .
Control of up to 167 breakers (4 panel system) is possible.
Confi gure your zones (breaker groups) using the LynTec RPC
browser set-up when connected to the LynTec RPC panel.
GET /p2.rpc?IPZ002=1
This control string will turn zone #2 on.
GET /p2.rpc?IPZ002=0
This control string will turn zone #2 off .
Zone Control = Z
Breaker Control = B