76/263 Bosch Rexroth AG | Tightening Technology 3 608 870 A47Nexo3 608 878 202
Nexo cordless Wi-Fi nutrunner | 3 608 870 A47/2017-
CwIgnore Clock wise ignore: Ignores the Cw switch
This signal ignores the position of the Cw switch of the nutrunner. Program no. 99 is always started.
CcwLock Counter clock wise lock: Disables the loosening function
This signal disables the tightening program no. 99 (Loosen) in a tightening channel.
Cw Clock wise: Starts tightening in clockwise direction
A selected tightening program is started with the Cw start signal. The start signal remains set to "high"
during the entire execution, until OK/NOK evaluation. If the Cw start signal changes to "low" during tight-
ening, the tightening program will be canceled with NOK and the quality evaluation "Canceled by PLC".
After an OK/NOK evaluation has been made, the signal can be set to "low" without any effect on tighten-
ing.
If an attempt is made to start a faulty tightening program, the tightening program is exited immediately with
an NOK evaluation. If an attempt is made to start a non-existent tightening program, the display shows a
message stating that there is no tightening program. There is no evaluation.
If the Play at start function is active, a tightening start is not considered performed if the maximum occur-
ring torque remained below the defined torque threshold
1
. In this case, the controller does not perform
any evaluation (OK/NOK) and results output.
CwLock Clock wise lock: Disables the starting function
This signal serves to lock the start of the selected tightening program.
CntRes Counter Reset: Resets the counter value
When this signal is set to "high", both counters of the OK/NOK counter are reset to their programmed
initial state. At the same time, the tightening channel is released, i.e. any nutrunners blocked by the OK/
NOK counter will be released.
CntSel0-7 Counter Select Bit 0-7: Selects the counter value
These signals are used to select the OK/NOK counters. This selection takes effect irrespective of the
tightening program, e.g. by the partner controller. If a new counter value is selected before the default
value for the OK/NOK counter is reached, the channel is disabled (optional) and evaluated with
CntCanceled ="high".
DisRp Disable Report: Suppresses the results output
When the DisRp signal is "high", the results output (e.g. printer output) can be suppressed for the sub-
sequent tightening program. Outputs within the scope of the operating system are not suppressed.
DisRpFtp Disable Report Ftp: Suppresses the results output via FTP
The FTP results output can also be suppressed by the PLC using the DisRpFtp PLC signal (signal
DisRpFtp = "high"). This avoids having to wait for the results output when restarting. This function is par-
ticularly useful when several tightening programs are started in a row.
En Enable: Enables
When the En signal is "high", it acts as a nutrunner start enable signal. If the En signal changes to "low"
during a tightening process or sequence, the process or sequence will be canceled and the tightening
program is evaluated as NOK.
EnScan Enable scanner: Enables the scanner
This signal enables the scanner in the nutrunner for the set duration (“1”) or disables the scanner (“0”).
The duration has to be set in the NEXO-OS operating system, in Settings Scanner Scanner con-
figuration.
1. This threshold can be set in the start step of the tightening program; the default value is 5% of the
nominal torque of the nutrunner.
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