Diagnostics Via Process Image Or Led Display; No Field Supply - WAGO I/O-SYSTEM 750 Manual

116 Diagnostics
Additional information
An example configuration with WAGO-I/O-CHECK and the meaning of the
individual values in the status information are available in the section "Example
Configuration" > ... > "Diagnostics".
10.2

Diagnostics via Process Image or LED Display

The most important diagnostic information and statuses available via process
image or LED display are explained below.
•

No field supply

• No radio connection
• Signal quality of the radio connections
• Validity of the process data
• Topicality of the process data
• Configuration errors
10.2.1 No Field Supply
If there is no field supply, LED A lights up red and all other LEDs are off. The
status byte (byte 0) in the process image of the inputs then have the value 0x40.
The 750-644 I/O module processes register communication or parameter channel
data, but does not respond to the Mailbox protocol.
The status byte in the process image of the inputs can also take the value 0x40
under other conditions. However, you can easily avoid misinterpretation:
• Initialization after restart not yet completed:
Wait several seconds (see section "Function Description" > ... > "Startup
Behavior"). If the LED indicators or the value of the status byte does not
change during this time:
Check if one of the following cases applies.
• "Configuration" mode when the Mailbox is hidden or "Real-Time
Communication" mode when the Mailbox is hidden and at least one
interrupted radio connection:
Show the Mailbox (see section "Process Image" > ... > "Control/Status
Byte" and "Mailbox"). If the I/O module confirms displaying the Mailbox,
there is sufficient field supply available.
Fehlt die Feldversorgung, leuchtet LED A rot, alle übrigen LEDs sind aus. Das
Statusbyte (Byte 0) im Prozessabbild der Eingänge weist dann den Wert 0x40 auf.
Die Busklemme 750-644 verarbeitet zwar Daten der Registerkommunikation oder
des Parameterkanals, reagiert jedoch nicht auf das Mailbox-Protokoll.
WAGO-I/O-SYSTEM 750
750-644 Bluetooth
Version 2.0.0, valid from FW/HW Version 03/03
®
RF-Transceiver
Manual