Eltako – The System in the Building – Operating manual for Series 14 RS485 bus DIN rail mounted devices
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FTS14TG pushbutton gateway and pushbutton bus coupler and bus switch
Issuing device addresses:
Device addresses for bus devices are issued one after the other using the rotary switch on the FTS14TG. Only one device can be
addressed with the factory setting Add. 0. Prewiring is therefore not suitable. Only after a single newly added device is issued with
an address can another device be added and addressed in the wiring.
Connect the first bus user to bus terminals BP and BN. The LED on the bus device lights up red. Briefly turn the rotary switch on
the FTS14TG to pos. 1 and back to 2. The LED on the bus user lights up green. Only then connect the second bus device and repeat
the procedure. When an address is issued by the FTS14TG pushbutton gateway, its lower LED lights up green for several seconds.
The lowest free address is always issued automatically, i.e. when several bus couplers are addressed, all couplers already
addressed must remain in the bus, otherwise the address is issued several times. No addresses can be issued specifically. It is
highly advisable to label bus devices already addressed for documentation.
Replacement and re-addressing:
If a replacement bus user is to receive the same device address as its predecessor, the new device must absolutely be without a
device address. When you briefly turn the rotary switch on the FTS14TG to pos. 1, the new bus user automatically receives the lowest
free device address which is therefore the same. This dispenses with teach-in in the actuators.
Delete device address:
Only connect one bus user on the FTS14TG to bus terminals BP and BN. The LED on the bus user lights up green. Turn the rotary
switch to pos. 9. The LED lights up red. If an address was deleted by the pushbutton gateway FTS14TG, its lower LED also lights
up green for a few seconds.
ID range:
In operating mode, the rotary switch BA defines the ID range and the ID structure. Up to 3 bus lines are possible. Each pushbutton
gateway must be set to a different operating mode to avoid duplicating IDs. (See the table on pages 21 to 23).
Pos. 2, 3, 4: Each bus user uses only one ID. (Use as direction pushbutton).
Pos. 5, 6, 7: Each bus user uses its own one ID per pushbutton. (Use as universal pushbutton; prescribed setting for relay function).
In addition, the modules send 4 different control signals per pushbutton:
T1 sends 0x30, pushbutton T2 sends 0x70, pushbutton T3 sends 0x10, pushbutton T4 sends 0x50
Information on the PCT14:
If you configure the FTS14TG with the PCT14, the FAM14 or FTS14KS must first issue a device address. Then you can make assign-
ments between actuators and feedback LEDs in an ID table. The PCT14 is unable to read out addressed bus switches or pushbutton
bus couplers. ID detection (right-hand column) must be switched on in order to display the address bus switches or pushbutton
bus couplers. After operating a switch, the IDs are then displayed (see pages 21-23). Alternatively, predefined ID lists are availab-
le. This allows the bus pushbutton or bus pushbutton coupler to quickly assign an ID to an actuator.
Testing the installation:
Turn the rotary switch of the FTS14TG to Pos. 8 to test the installation and data transfer over the 2-wire bus. In this operating mode,
no pushbutton telegrams are sent to the Eltako RS485 bus. Press all pushbuttons several times on the bus users.
The lower green LED lights up briefly every time a pushbutton is pressed. The automatic reset is not active, i.e. if an error occurs in
the 2-wire bus, the lower red LED lights up permanently.
LED displays in operation on the FTS14TG:
The upper red LED lights up briefly when a confirmation telegram is output by an actuator to the 2-wire bus. The lower red LED lights up
briefly when a pushbutton telegram is output to the Eltako RS485 bus. The lower green LED lights up briefly when a bus user pushbutton
is pressed. The lower green LED lights up permanently as long as the rotary switch is at Pos. 10 or when there is an active link to the PCT14.
Status display with bus pushbutton:
Bus pushbuttons with LED or FTS61BTKL bus pushbutton couplers can display feedbacks of switch actuators or dimmers. This is
achieved in the PCT14 software by assigning each pushbutton with the decimal device address of the actuator and the related
function in the FTS14TG (usually ON). In order to utilise the feedback from a dimmer, use the PCT14 to activate the "Confirmation
telegram with pushbutton telegram" parameter.
