ABB ControlMaster CM10 User Manual

Also see for ControlMaster CM10: Communications supplement User guide Manual Manual Commissioning instructions

ABB ControlMaster CM10 User Manual Manual pdf 65 page image

ControlMaster CM10, CM30 and CM50Universal process controllers, 1 /8 , 1 /4 and 1 /2 DIN 7 Advanced LevelIM/CM/B–EN Rev. H 637.6 Communication…Process Alarm / … Alarm 1 (to 8)Hysteresis Hysteresis trip level in engineering units. Activated at the alarm trip level but deactivated only whenthe process variable has moved into the safe region by an amount equal to the hysteresis value –see Process Alarm examples on page 61.Time Hysteresis If an alarm trip value is exceeded, the alarm does not become active until the Time Hysteresisvalue has expired. If the signal goes out of the alarm condition before the Time Hysteresis hasexpired, the hysteresis timer is reset.Display Enable Enables an alarm to be used for control purposes without it appearing as an active alarm state inthe Operator Level or Diagnostic view – see page 23.AcknowledgeSourceThe source required to acknowledge all active alarms.Acknowledge occurs on rising edge of the digital signal –see Appendix A, page 80 for description of sources.Enable Source The source required to enable alarms. If the source is None, alarms are always enabled – seeAppendix A, page 80 for description of sources.Used to setup communications parameters for the MODBUS / Ethernet communication protocols – seeseparate User Guide (IM/CM/C-EN).AcknowledgeMenuCommunication