User Manual

RSP-APA-002
User’s Manual
R-tron., Inc. 32/34 page
and verify the ‘Disconnected’ status and press the “WNMC” button. At this time, you need to
check if the status window next to the “WNMC” button is changed: Disconnected ->calling->
PPP Connected. If the connection fails to be set in 60 seconds, the status will be
‘Disconnected’ due to timeout. In this case, you can press the “ WNMC” button again to
set the connection. With PPP set, MCU is connected to the Internet, enabling SNMP Trap
messages to be sent to WNMC whenever alarms and Heartbeats occur.
- Program Download : Lets you download a new firmware version to the MCU when firmware is
upgraded. Downloaded files should be in Binary format and downloading methods are split into
Ack and NoAck.
① Download(AcK) : Receives AcK (acknowledge messages) for each message that is
transmitted to calculate Check Sum. When errors are generated during file transmission,
the transferring will be immediately stopped. This method requires roughly one more
minute than the NoAcK method.
② Download(NoAcK) : Calculates Check Sum for each message that is transmitted when
AcK may not be received. AcK messages are received when the transmitted messages
are completely sent. This method reduces one minute to download than the Ack method.
Figure 5.22 Modem Status Window
2. Modem system window
▶ Modem status
- NMST button : Refers to AT command to report current modem status with AT + NMST
commands programmed in the button. When you press the button, modem status information
is displayed.
- Analog / Digital : Shows transferring methods of the modem (Analog/digital types). When the
modem uses analog communication method, ‘Analog’ is displayed; if it uses Digital