Horner APG QX751 OCS - Manual (Page 24)

CH. 5 MAN0890-02-EN
August 20, 2009 Page 24 of 96 ECN # 979
5.4
Cscape Programming via CAN
The CsCAN port supports CsCAN Programming Protocol. If a PC has a CAN interface installed (via PCI
card or USB), and the PC CAN port is connected to the QX751/BPxx CsCAN port, Cscape can access
the QX751/BPxx for programming and monitoring.
In addition, the QX751/BPxx supports single-point-programming of all QX751/BPxx and other OCS/RCS
devices that are connected to a CAN network. If the PC COM port is connected to the QX751/BPxx MJ1
serial port, the QX751/BPxx can act as a pass-through gateway allowing Cscape to access all
QX751/BPxx and OCS/RCS devices that are attached to the CAN network.
5.5
Ladder-Controlled CAN Communication
Using Put and Get Network Words function blocks, the CsCAN port can exchange digital and analog
global data with other QX751/BPxx or OCS/RCS devices (nodes) attached to the CAN network.
In addition, Put and Get Network Heartbeat function blocks allow nodes on the CAN network to regularly
announce their presence and to detect the presence (or absence) of other nodes on the network.
5.6
Using CAN for I/O Expansion (Network I/O)
Connecting Network I/O devices (SmartStix Modules) to the QX751/BPxx CsCAN port, allows the
QX751/BPxx I/O to be economically expanded and distributed. A variety of SmartStix Modules are
available for this purpose.