5.3 Sequence I/O Signals5.3.3 Allocating Input Signals to Pins and Parameter Settings5-18/ZONE0 to /ZONE3 (ZONE Output) SignalsThese signals indicate when the current position is within a zone specified in the ZONE table.Note: You must allocate the /ZONE0 to /ZONE3 signals to use them. Use PnBD6 = n.X to PnBD9 = n.X(/ZONE0 to /ZONE3 (ZONE Output) Signal Allocations) to allocate the signals to connector pins. Refer to thefollowing section for details.5.3.4 Allocating Output Signals to Pins and Parameter Settings on page 5-20ALM (Servo Alarm Output) SignalThis signal is output when the SERVOPACK detects an error.Note: 1. The Servomotor changes to the SERVO OFF state when there is an alarm.2. Refer to the following section for information on the alarm reset methods.10.1.7 Alarm Reset on page 10-185.3.3 Allocating Input Signals to Pins and Parameter SettingsAlthough you can use the input signals with the default settings, you can also allocate thedesired input signals to pins 3 to 6 or 8 to 16 on the I/O signal connector (CN1). You set theallocations in the following parameters: n.X of PnBA0 to PnBAC, PnBAF, PnBB2, PnBB4to PnBB6, and PnBB8.Input signals are allocated as shown in the following table.Refer to Interpreting an Input Signal Allocation Table and change the allocations accordingly.Interpreting an Input Signal Allocation TableType Signal Pin Signal Status MeaningOutput/ZONE0to/ZONE3Must be allocated.ON (closed) ON = 1, OFF = 0The /ZONE0 to /ZONE3 signals specify a 4-bitbinary number. ZONE0 to ZONE3 specify a zone.OFF (open)Configure an external circuit so that this alarm output turns OFF the power supply to the SERVO-PACK whenever an error occurs.Type Signal Pin Signal Status MeaningOutput ALM 19 ON (closed) Normal SERVOPACK statusOFF (open) SERVOPACK alarmImportant• If you change the polarity of the /S-ON (SERVO ON Input) signal from the default setting, youmay not be able to turn OFF the power supply to the Servomotor if signal lines break or otherproblems occur. If you must change the polarity of one of these signals, verify operation andmake sure that no safety problems will exist.• If you allocate more than one signal to the same input circuit, a logical OR of the inputs will beused and all of the allocated signals will operate accordingly. This may result in unexpectedoperation.Important