Horner APG RCS SmartStix - Manual (Page 17)

CH.1 15 MAR 2003 PAGE 17
MAN0305-04
c.
%AIG Registers
A %AIG Register is a retentive 16-bit memory location, which is normally used to store a global analog
value obtained from another Control Station on the network.
d.
%AQG Registers
A %AQG Register is a retentive 16-bit memory location, which is normally used to store an analog value
to be sent as global data to the other Control Stations on the network.
e.
Network Port
The CsCAN Network is based on the Bosch Control Area Network (CAN), and implements the CsCAN
Protocol which is designed to take maximum advantage of the global data broadcasting capability of
CAN. Using this network protocol, up to 64 Control Stations can be linked without repeaters, and up to
253 Control Stations can be linked by using 3 repeaters. For more information regarding CsCAN
Protocol, refer to the CsCAN Protocol Specification document.
DeviceNet is an “open” higher layer protocol, which is supported by products from multiple vendors. In an
OCS or RCS, DeviceNet can be loaded as a replacement for the CsCAN Protocol Message Layer, and as
a result, the OCS or RCS becomes a DeviceNet Slave device. Note that the Mini still implements the
CsCAN Protocol Command Layer with respect to the RS-232 programming port. For more information
regarding DeviceNet Protocol, contact the DeviceNet governing body (ODVA).
Ladder Code
The Ladder Code, stores ladder instructions generated by Cscape. This Ladder Code is downloaded and
stored into the Control Station’s Flash memory, to be executed each controller scan, when the controller
is in RUN mode.
1.4
MiniOCS / MiniRCS Models
Because there are several models of MiniOCS / MiniRCS models available, the MiniOCS / MiniRCS can
be used in a wide range of applications. The MiniOCS consists of an Operator Control Station, and the
MiniRCS consists of a Remote Control Station. Each model comes equipped with one factory installed
I/O board. The models vary according to the type of I/O board installed and are available in non-network
and network versions. Network versions contain an additional connector allowing connectivity to CAN
networks. Refer to Additional References on page 18 to locate model-specific information for each Mini.