Delta RMC101 User Manual download pdf (Page 487)

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101

Serial (RS-232/422/485) 5.5

Communications 5-237

The following options are available in the Serial Module Options dialog box:

• Protocol: Select the protocol supported by your master device. The Test Mode protocol is a special

one used to test the communications. With this protocol, for each character the RMC receives, it will

add one to it and respond with that character. For example, if you send the character A, it will

respond with B. This can be used from HyperTerminal included in Windows 98/NT/2000/Me/XP.

• Serial Port Settings: The follow settings define how data is sent over the wire:

Note: Some of these options may be disabled depending on which protocol was selected. For

example, many protocols require eight data bits, and as such seven data bits is not available

when these protocols are selected.

• Baud Rate: Select the baud rate from 9,600 to 115,200. This must match the other device(s) on

the network.

• Data Length: Select seven (7) or eight (8) data bits. Most protocols require eight data bits. This

must match the other device(s) on the network.

• Parity: Select which type of parity error checking you want to include. This must match the other

device(s) on the network.

• Line Driver: Select the line driver you wish to use. For further details on the line drivers, see

Line Drivers: RS-232/422/485.

Each line driver also offers advanced settings. These are described below:

o Advanced RS-232 Settings: The type of Flow Control can be selected. If None is selected,

then no flow control is used. If Hardware (RTS/CTS) is selected, then the RTS and CTS lines

on the serial cable are used to control when a device can send data to avoid overflowing the

receiver's buffer. This option is most often not used, as the protocols keep the packet sizes

small to avoid overruns. This setting must match in both devices.

o Advanced RS-422/485 Settings: This option allows enabling and disabling the biasing and

termination circuits for the receiver and transmitter circuits (4-wire) or transceiver circuit (2-

wire). These options are described in detail in RS-422/485 Termination and Biasing.

• Protocol-Specific Settings: Depending on the protocol selected, additional options may be

available under this heading. The most common setting is a node address. See the appropriate

protocol-specific help topic for details:

• Using Modbus/RTU with the RMC SERIAL

• Using DF1 (Full- and Half-Duplex) with the RMC SERIAL

• Using the Mitsubishi Bidirectional Protocol with the RMC SERIAL

• Using the Mitsubishi No Protocol with the RMC SERIAL

5.5.2.2 RMC SERIAL Firmware Screen

The Firmware tab on the Serial Module Options dialog box holds the following information:

• Communication Program Version

This field gives the version of the main serial program currently running in the RMC SERIAL

module. This field will display "Debugger" if no firmware is currently loaded. To update your

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