Communication system and work apparatus

A communication system comprising:

• multiple token passing type networks in which multiple nodes are disposed with one direction as a communication direction;
• and
• a bridge configured to communicatively connect the networks,
• wherein the multiple nodes sequentially transmit a data frame along the communication direction, read and write data from and to the data frame, and include a specific node requiring data in the data frame transmitted by another network,
• the bridge transmits, in each of the networks of a connection destination, the data frame transmitted from the node on an upstream side to the node on a downstream side in the communication direction, reads data from the transmitted data frame, and writes the data to the data frame of another network to transmit the data, and
• in one network of the two networks connected to a common bridge, the specific node is disposed within a half circumference of disposition positions of the multiple nodes on the upstream side in the communication direction with respect to the bridge, and in the other network, the specific node is disposed within a half circumference of the disposition positions of the multiple nodes on the downstream side in the communication direction with respect to the bridge.