D300529 0115 - BL67 I/O modules
12-11
BL67-1RS232
12.1.5 Diagnostic and status messages
LED status messages
Table 12-4:
LED status mes-
sages
LED Display Meaning Remedy
D Red Module bus communication failure Check if more than two ad-joining
electronics modules have been
pulled.
This concerns modules located
between this module and the gate-
way.
Red
flashing,
0.5 Hz
Diagnostic message pending –
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 -
RTS Green The RS232 module stopped the
data transfer from the communica-
tion partner.
-
off The RS232 module enabled the
data transfer from the communica-
tion partner.
-
CTS Green The communication partner
stopped the data transfer from the
RS232 module.
-
off The communication partner
enabled the data transfer from the
RS232 module.
-