COMMUNICATION SYSTEM AND IMAGE FORMING APPARATUS

摘要

Provided is a communication system including a master device that transmits a signal transmitted from an upstream side to a downstream side, and plural slave devices connected in series to the downstream side of the master device, wherein the slave devices include a communications port that communicates with the upstream side and at least one communications port that communicates with the downstream side, and the master device sequentially sets identification information that identifies the slave device from another slave device from the upstream side to the downstream side by sequentially transmitting a setting information towards all of the plural slave devices.

主权项

1. A communication system comprising:
a master device that transmits a signal transmitted from an upstream side to a downstream side; and a plurality of slave devices connected in series to the downstream side of the master device, wherein the slave devices include a communications port that communicates with the upstream side and at least one communications port that communicates with the downstream side, and the master device sequentially sets identification information that identifies the slave device from another slave device from the upstream side to the downstream side by sequentially transmitting a setting information towards all of the plurality of slave devices, restricts modifications of the identification information with respect to the slave device for which the identification information is set after setting the identification information for any of the slave devices for which the identification information is not set, and opens the communications port for allowing the setting information to pass through the another slave device on the downstream side of the slave device.