D300529 0115 - BL67 I/O modules
12-25
BL67-1RS485/422
12.2.5 Diagnostic and status messages
LED status messages
Diagnostics
This module has the following diagnostic data per channel:
Diagnostic byte assignment, Process input data (page 12-18)
Diagnostic message
Table 12-4:
LED status mes-
sages
LED Display Meaning Remedy
D Red Module bus communication failure Check if more than two ad-joining
el
ectronics modules have been
pulled. This concerns modules
located between this module and
the gateway.
off No error messages or diagnostics –
TxD Green Data transmission active –
off No data transmission –
RxD Green Data are currently received –
off No data are received –
Table 12-5:
Diagnostics
buffer overflow Buff Ovfl:
Overflow of the receive-buffer (RX-buffer).
Frame error Frame Err:
The module has to be parameterized for adaptation to the data
structure of the data terminal equipment (DTE).
A frame error occurs in case of inconsequent parameterization
(number of data bits, stop bits, method of parity, …).
Data flow control error
Data flow control
HndSh Err:
The DTE connected t the module does not react to XOFF or RTS
handshake.
The internal receive-buffer may overflow (buffer-overflow = 1).
Hardware error HW Faliure:
The module has to be replaced (e.g. error in EEPROM or UART)
Parameterization error Prm Err:
The parameter settings can not be supported.
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