Parker EME
Compax3 Accessories
192-121102 N04 June 2008 449
Function of the HEDA LEDs
Green LED (left)
HEDA module energized
Red LED (right)
Error in the receive area
Possible causes:
at the Master
no slave sending back
Wrong cabling
Terminal plug is missing
several masters are sending in the same slot
at the slave
several masters in the system
no master active
Terminal plug is missing
no transmission from one or several receive slots (neither by the master nor by
another slave)
HEDA-wiring:
HEDA-
aster
BUS07/01
BUS07/01
SSK28/..
S
S
K
28
/
.
.
S
S
K
2
8
/
.
.
Layout of SSK28 (see page 430, see page 445)
Design of the HEDA bus terminator BUS 07/01:
Pin 6
Pin 5
Pin 4
Pin 3
Pin 2
Pin 1
Pin 7
Pin 8
Jumpers: 1-7, 2-8, 3-4, 5-6