You can disable the control limit labels (EnableAlarmLineText), the control limit line (EnableAlarmLine), and the alarm checking (EnableAlarmChecking), all using the ControlLimits | Target, LCL3 and UCL3 property blocks of the PrimaryChartSetup. ControlLimits is also found under the SecondaryChartSetup. See the CustomizeChartAppearance example script in the chartdefExampleScripts.js file . In the example below the alarm text has been disabled for LCL3 limit, and enabled for the Target and UCL3 limit, using the "EnableAlarmLineText" property.
"PrimaryChartSetup": {
"ControlLimits": {
"Target": {
"EnableAlarmLine": true,
"EnableAlarmChecking": true,
"LimitValue": 30,
"EnableAlarmLineText": true
},
"LCL3": {
"EnableAlarmLine": true,
"EnableAlarmChecking": true,
"LimitValue": 25,
"EnableAlarmLineText": false
},
"UCL3": {
"DisplayString": "UCLXX",
"EnableAlarmLine": true,
"EnableAlarmChecking": true,
"LimitValue": 35,
"EnableAlarmLineText": true
}
}
},