Yokogawa 212 Heat Calculator - Manual (Page 3)

CONTENTS
1. Overview 3
1.1 Model Number Designation 5
1.2 Conversion Factors 6
2. Specification
7
3. Operation 11
3.1 Display Operation 13
3.1.1 Normal Operation 13
3.1.2 Charge/Discharge Operation 17
3.1.3 Peak and Off-Peak Operation 18
3.2 Checking Set-up Parameters 19
3.3 Units of Measurement 24
3.4 Frequency Cut-off 25
3.5 Offset Functions 26
3.6 Operating Modes 27
3.6.1 Heating 27
3.6.2 Cooling 27
3.6.3 Heating/Cooling 27
3.6.4 Charge/Discharge 28
3.7 Peak and Off-Peak 29
3.8 Logging 30
4. Communications
31
4.1 Meter-bus 32
4.2 Infra-red Communications Link 34
4.3 RS485 with Modbus RTU Protocol 35
4.3.1 Hardware 35
4.3.2 Protocol 35
4.3.3 Bus Address 36
4.3.4 Function Codes 37
4.3.5 Exception Response 37
4.3.6 List of Data Registers 38