Description
ABB LD800HSE local station detects
ABB LD800HSE local station detects
It can only connect to a node on a personal computer interface. Use it as an operating station. The coverage of the internet is also relatively small. Systems composed of some loop controllers are usually connected into a star network. Token broadcasting involves a node issuing a token (which is a special bit group with a passive address and a destination address within the bit group), and the token travels around. The node that receives this token changes a specific location in the token, turning the token into a frame start delimiter for an information frame, and attaching other fields required to form a frame to send information. Other nodes on the network are receiving information. When the local station detects that the destination address of the frame matches the local address, it receives the information frame. Simultaneously forward the frame until it returns to the sending station before releasing it. Send a new token again. The characteristic of this protocol is that only nodes holding tokens can send information. In a token broadcast protocol network, nodes that can connect multiple personal computer interfaces can be used. All nodes on the network are equal. Every node has the opportunity to send information. For example, the INFI9090 of BAILEY in the United States is a token broadcasting network. The store and forward protocol is a protocol where a node sends information to the next node. When a node receives information, it must first save it. If it wants it, it can receive it. If it doesn’t need it, it can forward it. Until the node where this information is needed. Then the information is returned to the source node before being released. This protocol is used in ring networks. This type of ring network can reach several kilometers. The factory loop of the NETWORK 90 in BAILEY, USA is like this network. No matter what type of network structure, there is a limit to the total number of nodes connected to the network, and as for what kind of nodes, there are no restrictions on how many.
BACHMANN BS203
BACHMANN MP226/EW
BACHMANN SFS236C
BACHMANN ME203/CN
BACHMANN MP226
BAILEY IIMCP01
BAILEY IMMFP01
BAILEY IMMFP03
BAILEY IMMPI01
BAILEY IMSPM01
BAILEY INICT01
BAILEY INICT03A
BAILEY IPFLD24