Extended Control-Byte

The extended control byte (ECB) is transmitted in process data mode from the controller to the terminal, and controls a variety of functions within the power terminal.

Extended Control-Byte

Bit	ECB.7	ECB.6	ECB.5	ECB.4	ECB.3	ECB.2	ECB.1	ECB.0
Name	-	Motor left motion	Motor right motion	-	-	-	-	Clear I_max

Key

Bit	Name	Value	Description
ECB.7	-	0_bin	reserved
ECB.6	Motor left motion*	1_bin	Switches the motor into rotation to left: The power terminal's output Out2 is set, in order so switch on the contactor connected through the Siemens kit for reversing combinations
ECB.5	Motor right motion*	1_bin	Switches the motor into rotation to right: The power terminal's output Out1 is set, in order to switch on the contactor mounted directly on the power terminal.
ECB.4 to ECB.1	-	0_bin	reserved
ECB.0	Clear I_max	1_bin	The DR2 data registers are set to zero in all three register sets (they contain the peak values of the currents). Because locked-rotor currents of motors are much larger than the rated currents, the DR2 data registers indicate a high current each time a motor has started. In order to be able to detect any peak currents that might occur during nominal operation, you can set the DR2 data registers to zero at any time with this bit.

*) Notes:

Rotation to the right or left must be enabled (with bits 0 and 1 respectively) in the feature register if it is to be possible to switch the motor to right-handed (bit 5) or left-handed (bit 6) rotation with the extended control byte.
If the motor is running to the right (output Out1 is set), you must first switch this off (by resetting bit 5) before you can switch it to left-handed rotation with bit 6. If you set bit 6 while the motor is running to the right, the power terminal will switch the motor off.
If the motor is running to the left (output Out2 is set), you must first switch this off (by resetting bit 6) before you can switch it to right-handed rotation with bit 5. If you set bit 5 while the motor is running to the left, the power terminal will switch the motor off.
If you set bits 5 and 6 at the same time, the motor remains switched off.