Specifications

CC-Link Head Station STL-BT1 (CC-Link)
3 - 6
MITSUBISHI ELECTRIC
3.2.5 Setting the Transmission Speed and Address Mode
The STL-BT1 supports five different transmission speeds and two address modes (fixed address mode
and auto address mode).
In auto address mode the head station determines the number of addresses (numbers of occupied
stations) according to the connected STlite modules (one to four addresses per head station).
In fixed address mode the head station sets the number of occupied stations to four irrespective to
the connected STlite modules.
NOTE Number of units and number of stations:
The number of units is the number of devices that are physically connected to a single CC-Link.
The number of stations is the total number of occupied stations among all slave stations that are
connected via the CC-Link. One unit can occupy up to four station numbers.
Fig. 3-7: Transmission speed and address
mode selector switch of the STL-BT1
Transmission speed
Position of the selector switch
Fixed address mode
(STL-BT1 occupies 4 stations)
Auto address mode
(STL-BT1 occupies 1 to 4 stations)
156 kbit/s 0 5
625 kbit/s 1 6
2.5 Mbit/s 2 7
5 Mbit/s 3 8
10 Mbit/s 4 9
Tab. 3-2: Selection of transmission speed and address mode