RMC75S

Serial Communications

The RMC75S provides the processing power of the RMC75 series motion controllers with Serial communications and an RS-232 Monitor port.

The RMC75S combines multiple communication protocols with RS-232 and RS-485 transceiver options to form a versatile and industrial-hardened communication platform. The RS-232 option provides full-duplex point-to-point communications, while RS-485 allows half-duplex multi-drop networking with up to 128 RMC70s.

Due to limited throughput of serial communications, the RMC75S is best suited for applications where time-critical machine control functions related to motion are implemented in the RMC75S using the RMC70 User Programs. The serial communications works well for low-bandwidth monitoring or modifications to the RMC75S parameters or User Program variables. In applications where higher throughput is necessary, consider one of Delta's other RMC70 CPU/Communications choices.

Features

9600-115200 baud data transfer
Supports 7 or 8 data bits
Supports odd, even, or no parity
Optically-isolated signals
Software-select RS-232 or RS-485 transceivers
DB-9 and 8-pin terminal block connectors included
Allows direct access to all RMC75 registers
- Axis status registers
- Axis command registers
- Axis parameters
- Discrete I/O
- Variables

Supported Protocols

Allen-Bradley DF1
This protocol is supported by most Allen-Bradley PLCs and HMIs including the PLC-5, SLC 5/05, and ControlLogix. Allen-Bradley ControlLogix, SLC5/05, PLC-5, and SoftLogix 5.
The RMC75 supports Full-Duplex and Half-Duplex DF1. The RMC75 uses files F7 to F255.
Bidirectional Protocol
This protocol is supported by the Mitsubishi Q-Series.
Modbus/RTU
This protocol is supported by most Modicon PLCs and a number of third party products. The RMC75 uses holding registers 400001 to 465536.

Register Data Types:

The RMC75 uses floating-point (REAL) data type registers. A handful of these registers are actually used as double integers (DINT) or double word (DWORD) data types.