JVL MIS17 Series User Manual page 68

3.4
3.4.8 Safe Torque Off without using MacTalk
If MacTalk is not used for monitoring the status of the STO function it must be done as
follows:
The motor contains a number of registers which can be accessed from various protocols
depending on which options the motor has.
Protocols available are for example Ethernet (EthernetIP, PROFINET etc.) and CAN-
open, Modbus or the MacTalk protocol.
The status of the STO function is also available using above protocols.
Each field in MacTalk described earlier in this chapter can be monitored/read from a reg-
ister in the motor.
The registers that are relevant for the STO function are:
R25 STATUS_BITS
R35 ERROR_BITS
-
68 JVL Industri Elektronik A/S - User Manual - Integrated Stepper Motors MIS17x, 23x, 34x, 43x
Commissioning
Status bits related to the STO function.
Note that other bits for many other functions in the motor
are also represented in this register.
- Bit 23: Input status for the STOA input.
Reading "0" means that the input is inactive
(no voltage applied).
- Bit 24: Input status for the STOB input.
Reading "0" means that the input is inactive
(no voltage applied).
See also: Status
Error bits related to the STO function.
Note that other bits for many other functions in the motor
are also represented in this register.
Bit 27: STO_ALARM.
Will be set if there is an internal hardware defect in
the STO circuitry.
The STO_ALARM will only be set if the STO self-di-
agnostic circuit has detected an internal error.
In this case, the motor must be returned the manu-
facturer (JVL) for repair.
- Bit 29: STO - This bit will be set if one of the 2 STO inputs
are off (not applied an voltage). Also STO is set if the
STO_ACTION_ERROR bit is set.
See also: Err_Bits, page 201
bits, page 198
Important
Option