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方法名称: select_unit
方法ID: 0x4033
方法标签: Process unit
方法描述: 现场设备变量单位——使用数值表示、最小范围、范围上限、范围下限、传感器上限和传感器下限显示的工程单位。
- {
- int old_unit;
- int counter;
- int unit;
- int mail;
- float _fvalue;
- float _upper;
- float _lower;
- char status[3];
- mail = 0;
- _set_device_status(0xFF,0);
- _set_all_resp_code(0);
- _set_xmtr_device_status(0xFF,0);
- old_unit = _ivar_value(resolve_record_ref(resolve_array_ref(172,1),190));
- if (_get_dev_var_value(literal_string(203),0,resolve_record_ref(resolve_array_ref(172,1),190)) == 0)
- {
- unit = _ivar_value(resolve_record_ref(resolve_array_ref(172,1),190));
- if (old_unit != unit && (!(old_unit == 32 || old_unit == 33 || old_unit == 34 || old_unit == 35) || !(unit == 32 || unit == 33 || unit == 34 || unit == 35)))
- {
- ACKNOWLEDGE(literal_string(178));
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