No Radio Connection; Signal Status Of The Radio Connections - WAGO I/O-SYSTEM 750 Manual

WAGO-I/O-SYSTEM 750
®
750-644 Bluetooth RF-Transceiver
10.2.2

No Radio Connection

Radio connections are absent when the following applies:
• The I/O module is in "Real-Time Communication" or "Ad-hoc
Communication" mode.
• At least one of the slots relevant in the respective mode has been configured
correctly and enabled for the connection, but there is no connection.
Depending on the operating mode and role configured, the 750-644 I/O module
indicates no radio connection in different ways:
• "Real-Time Communication" mode, operating as the master:
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• "Real-Time Communication" mode, operating as a slave:
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• "Ad-hoc Communication" mode
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To prevent misinterpretations, check the operating mode and configuration of the
750-644 I/O module in case of doubt using the following Mailbox commands
(overview for connecting enabled slots, current operating mode):
• GetLocalDeviceStatus (0xD0)
• GetAllowedRemoteDevices (0x84)
• GetBoundRemoteDevices (0x87)
10.2.3

Signal Status of the Radio Connections

For all existing radio connections, the 750-644 I/O module provides the following
status information:
• Signal quality based on the bit error rate (BER):
The bit error rate can be queried using the Mailbox command
"GetLinkQuality, 0xD5". Because an error-correcting procedure is used for
radio transmission, transmission errors do not affect transmitted user data
directly. However, a high bit error rate indicates significant interference.
You can expect automatic error correction to negatively affect timing.
• Signal strength indicator (RSSI):
The signal strength indicator is a measurement of received signal strength.
Manual
Version 2.0.0, valid from FW/HW Version 03/03
The LED assigned to the respective slot is red or yellow.
Bit 6 in the status byte (byte 0) has the value 1.
In the response to Mailbox command "GetNetworkStatus (0xD1)",
the I/O module reports not radio connection.
LED E is red or yellow.
Bit 6 in the status byte (byte 0) has the value 1.
In the response to Mailbox command "GetNetworkStatus (0xD1)",
the I/O module reports not radio connection.
The LED assigned to the respective slot is red or yellow.
Bit 2 in the status byte of the respective ad-hoc slot (e.g. byte 2 for slot
address 0x10) has the value 0.
In the response to Mailbox command "GetNetworkStatus (0xD1)",
the I/O module reports not radio connection.
Diagnostics 117