Chapter 10 CANopen  Function and Operation 
 
5.  It supports the reading emergencies from a slave service. 
  Use this service to read an error or an alarm from a slave. 
  You can store up to 5 emergencies in a slave. 
  You can read emergencies from a slave through a PLC ladder diagram. 
6.  It supports the SYNC object (synchronous object) service. 
7.  Several devices can operate synchronously through the synchronous object service. 
8.  The supported CANopen communication rates are: 20K, 50K, 125K, 250K, 500K, and 1Mbps. 
The supported mapping data types are: 
32-bit  DINT UDINT REAL DWORD 
64-bit  LINT ULINT LREAL LWORD 
 
The CAN port has the following functions when acting as a slave. 
  It supports the standard CANopen protocol DS301 V4.02. 
  It supports the NMT (network management object) service. 
  It supports the NMT state control. 
The state of the AS series in the CANopen network is controlled by a master. 
  It supports the NMT error control. 
The AS Series supports Heartbeat but not Node Guarding. 
  It supports the PDO (process data object) service. 
  The PDO message transmits the immediate input data and output data. 
  It supports up to 8 TxPDO and 8 RxPDO. 
  The PDO transmission type: synchronous mode and asynchronous mode 
  It supports the emergency service. 
If an error or an alarm occurs in the AS series, the master is notified through the emergency service. 
 
10.1.2  The Input/Output Mapping Areas 
The following table lists the CANopen DS301 specifications for the AS series PLC.   
Master 
Maximum transfer size of 
Up to 2000 Bytes (including some system configurations) 
Slave 
Maximum transfer size of 
Up to 8 PDOs; each PDO with up to 8 bytes can be transferred