ABB 500 Series Builder's Manual page 75



Configuring the 56/64 kbit data
communication modules
&RQILJXULQJ WKH  NELW GDWD FRPPXQLFDWLRQ
PRGXOHV
&RQILJXULQJ WKH ILEUH RSWLFDO PRGHP
Two different levels of optical output power can be set on the HMI under:
&RQILJXUDWLRQ7HUPLQDO&RP5HP7HUP&RP2SWR3RZHU
For the optical module, the optical output power has to be set according to the attenua-
tion of the fibre optic link.
For multimode fibres:
• If the attenuation is less than 6 dB, use Low power setting
• If the attenuation is higher than 10 dB, use High power setting
• If the attenuation is between 6 and 10 dB, use either High or Low power setting
For single-mode fibres:
• If the attenuation is higher than 5 dB, use High power setting
• If the attenuation is between 0 and 5 dB, use either High or Low power setting
For optimal operation, the optical communication modules in both terminals must be
synchronized. To achieve this, one terminal acts as a Master and the other as a Slave.
This is set under:
&RQILJXUDWLRQ7HUPLQDO&RP5HP7HUP&RP&RPP6\QF
1RWH
7KLV LV DQ DGGLWLRQDO VHWWLQJ DQG VKRXOG QRW EH PL[HG XS ZLWK WKH 0DVWHU6ODYH VHWWLQJ
IRU WKH GLIIHUHQWLDO SURWHFWLRQ IXQFWLRQ
When communicating with FOX 515 Plus, the setting should be Master for version 2.0
and higher. Slave for version 1.1 and 1.2.
When operating back-to-back over dedicated fibres the setting shall be Master on one
terminal and Slave on the other.
,QVWDOODWLRQ RI WKH RSWLFDO FDEOHV LQ
WHUPLQDOV DQG FXELFOHV
&KDSWHU 
69