Product Description:

The RZP01.1-K1 option module is produced by Bosch Rexroth Indramat and belongs to the RZP Option Modules series. It mounts inside Rexroth drive controllers to provide a CAN communication interface that exchanges process data words between the drive and higher-level PLCs or motion coordinators. By adding this board, an engineer can link a drive to a CAN network without using external gateways, keeping wiring short and diagnostics centralized.

All network wiring is terminated on connector X13, where pin 1 carries the CAN high signal, pin 2 carries CAN low, and pin 3 is signal ground. At power-up the module initializes with a default speed of 500 kbaud, a value that defines the maximum bit transfer rate on the bus and must match every other node. Incoming telegrams are accepted only when their identifier equals 160; this identifier lets the drive filter messages meant for its control word. If no valid frame is received within 0.1 s the receive watchdog triggers, and the module places the axis in the protective state denoted as Fault, preventing uncontrolled motion.

For transmission tasks, the module issues status words under identifier 176. The transmit process data clock is factory-set to 254 ms, so the drive publishes its status roughly four times per second unless modified through parameterization. There is no galvanic barrier between the CAN signals and the internal electronics, indicated by the value No for isolation; therefore the system designer must ensure a common reference potential through the signal ground line. Because the interface conforms to the CAN Bus standard, it supports standard differential signaling and arbitration rules, allowing the module to integrate with third-party controllers that observe ISO 11898 while still retaining the pin assignment and timing described above.