AH 5 00 Mo d u le Ma n ua l1 5 - 86. To reduce the reflection of a communication signal on a network, a terminal resistor mustconnect CAN+ and CAN-. (Specifications for a terminal resistor: 121 Ω; precision: 1%; power:Greater than 1/4 W)15.4 Configuration15.4.1 Selecting a ModeBefore AH10COPM-5A operates normally, users have to set AH10COPM-5A to Master or Slave bymeans of HWCONFIG in ISPSoft. After AH10COPM-5A is set, the setting needs to be downloadedto AH10COPM-5A.If the users select Master, they have to use CANopen Builder to configure a network. Creating a CANopen networkAn AH500 series CPU module can be connected to eight AH10COPM-5A modules at most.Before users create a network, they have to know the requirements for creating the network,and plan data exchange, including the slave stations which need to be used, the data whichneeds to be exchanged, transmission methods, the total quantity of data which needs to beexchanged, and response time. All the information determines whether the network created isreasonable, and whether the network created meets the requirements. It even affects themaintainability at a later stage, and the convenience of upgrading the capacity of the networkcreated.
