Casio IT-2000W manual Command, Option, Crc

Command

Always specify /S or /R. This command must be specified as the first parameter. /R /S Transmission or reception specification

/R: File reception

/S: File transmission

(Both /R and /S cannot be specified at the same time.)

Option

After the command, specify the appropriate options. The options must be specified in the following order:

X / Y Communication protocol specification. This must directly follow either /R or /S.

X:XMODEM protocol communication.

Y:YMODEM protocol communication.

(Both X and Y cannot be specified at the same time.)

M C Error check method. This can be specified only if either /R or /S is specified.

M:Checksum (only for XMODEM)

C:CRC

(Both M and C cannot be specified at the same time.)

If this specification is not made, M is automatically used if XMODEM communication is specified, and C is automatically used if YMODEM communication is specified. The M specification will be invalid if the Y option is specified.

N L Packet length.

N:Normal (128 bytes)

L:Long (1024 bytes)

(Both N and L cannot be specified at the same time.)

If this specification is not made, N is automatically used if XMODEM communication is specified, and L is automatically used if YMODEM communication is specified.

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