Yaskawa JAPMC-MC2303-E - Manual (Page 150)

7.3 Notes on Regular Usage of FL-net
7-12
7.3 Notes on Regular Usage of FL-net
For FL-net transmission path standard, refer to the preceding item or IEEE802.3. In addition, consider the following
FL-net specific restrictions and notes.
1 Do not flow communication data of other Ethernet via an FL-net communication cable.
2 Do not connect FL-net to a router.
3 Even if a switching hub is employed for FL-net, effects specific to the switching hub cannot be obtained.
4
When infrared radiation or wireless media is used, real-time processing performance during communication may
deteriorate greatly.
5
When a PC is used, real-time processing performance during communication may change greatly depending on PC
capability, OS, and applications.
6
Use a predefined IP address.
Use the common network address. (The standard network address is 192.168.250)
It is recommended to use IP address node numbers (station numbers) in the following range.
Network address: 192.168.250. Node number: 1 to 249
Duplicate node numbers cannot be checked during initial setting. However, if duplicate numbers are set, a node
number duplication error will occur when communication starts. Be sure to set them carefully.
7 Be sure to connect the ground wire firmly. Use a ground wire with enough thickness.
8 Install FL-net far from noise sources. Avoid placing power supply cables near FL-net.
9
When cyclic data communication or message data communication is performed, real-time processing performance
may deteriorate depending on an amount of data and other factors.
10 An area (common memory area) for cyclic data communication does not need to be allocated continuously.
11
When a transceiver has been equipped with an SQE switch, set it properly according to the included instructions
manual.
12
Regular communication in the entire system is affected by the processing capability of connected equipment. All
equipment connected to the network intercommunicates by adjusting the baud rate to the equipment with the slow-
est communication processing capability (at a minimum allowable frame interval). For this reason, real-time pro-
cessing performance of the entire system may deteriorate greatly due to connection or addition of one piece of
equipment.
13
Though the header part for message data communication is a big-endian, the data part is a little-endian. However,
note that the system parameter, which is the data part for profile read, is a big-endian.
14
Do not use equipment with different protocol versions or modes in the same network. When the same network
comprises multiple pieces of equipment having different protocol versions or modes, all the network equipment
cannot be connected to the network.