ABB REG670 Commissioning Manual page 134

Section 12
Testing IED operation
128
1. Uncheck Forcing Session under the menu IED.
IEC15000031 V1 EN-US
2. Click Yes in the confirmation dialogue box.
PCM600 will revert all forced signals back to unforced and the real signal
values will immediately take effect again.
This may change both binary input values and output relay states
and will undo any forcing done by using the LHMI.
If the IED is left in test mode, then it is still possible to perform
new forcing operations, both from LHMI and from PCM600
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062
1MRK 502 073-UEN A
Commissioning manual