Rainbow Electronics FARGO MAESTRO 100 (with TCP_IP) - Manual (Page 166)

Serial Port Commands
Multi-flow Management +WMFM
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WM_DEV_OAT_UGD_049 - 001 VOLUME 1 August 23, 2007
8.12.6 Notes:
• Since the UART2 port does not provide all the serial signals (only
RX/TX/RTS/CTS), it is not recommended to use this port for GSM or GPRS data
mode.
• The response to AT+WMFM=? is dynamic according to the different UART
states for =1 (depending on which port number is opened
when the command is sent to the Wireless CPU ® ).
• Only the remote UART can be opened or closed (it is impossible to close
UART1 sending WMFM command trough UART1)
• When attached to a data flow allocated for incoming data is closed,
the management returns to dynamic mode.
• In the "mode" parameter, 3 value is not allowed because used internally.
•
The reading "Port: 80" state with +WMFM command always returns +CME
ERROR: 3
• The UART2 port is not available when the Bluetooth stack is started.