3 608 878 300 Tightening Technology | Bosch Rexroth AG 289/641
System 350 | 3 608 878 300/2019-03
Fig. 6–47: Results output via field bus (1), single-channel output as centralized results output vie communication unit in a tightening
system with 17 channels, installed in BT356, e.g. in a control cabinet
6.4.1 Fundamentals of tightening results output via field buses
6.4.1.1 Protocol description
The data exchange between the tightening system and the partner controllers is implemented physically
via an interface module that is inserted in slot A. The following interface modules can be used to transfer
data in the master slave procedure:
• IMdev (DeviceNet)
• IMpdp (PROFIBUS)
• IMpnio (PROFINET IO)
• As of version V2.500 of the Rexroth Tightening System 350: IMpnio2 (PROFINET IO)
• IMenip (EtherNet/IP)
• As of version V2.600 of the Rexroth Tightening System 350: IMenip2 (EtherNet/IP)
• IMmtcp (ModbusTCP)
• As of version V2.500 of the Rexroth Tightening System 350: IMecat (EtherCAT)
A slave with data buffer for data communication is implemented in the interface module, i.e. the partner
controller, as master, writes the data to the input field and reads the data from the output field of the data
buffer. The tightening system provides the data accordingly in the output field of the data buffer or accepts
the existing data in the input field. The time for the data exchange is specified by the master.
(1) Results output via field bus
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