Hioki SM7860 Series, Instruction Manual

Page: 37 / 64

33
Communication Method
Error Register
The Error Register, which consists of 8 bits, manages error information. The contents of this register
are aggregated in the CME, EXE, DDE, and QYE bits of the Standard Event Status Register (no mask
processing is performed).
Error register-related message are listed below.
∗
CLS
Clears the following registers:
• Status Byte Register
• Standard Event Status Register
• Error Register
ERR?
Queries and clears the Error Register.
bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0
– MLE HDE DFE DRE CNE ISE BDE Error Register
PON URQ CME EXE DDE QYE RQC OPC Standard Event Status Register
bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0
MLE: Message Length Error HDE: Header Error
DFE: Data Format Error DRE: Data Range Error
CNE: Can Not Execute ISE: Internal communication Error
BDE: Environment Backup was Damaged (RAM)
Error Register structure
Bit No. Name Event/status indicated by set bit
Bit 7 – Unused
Bit 6 MLE Message Length Error
Set when the message length exceeds the allowable range.
The bit is reset after the register is read.
Bit 5 HDE Message Header Error
Set when an unrecognizable message header is received.
The bit is reset after the register is read.
Bit 4 DFE Data Format Error
Set when the number of parameters exceeds the stipulated number or when there is an
unrecognizable parameter.
The bit is reset after the register is read.
Bit 3 DRE Data Range Error
Set when a parameter falls outside the stipulated range.
The bit is reset after the register is read.
Bit 2 CNE Unexecutable command
Set when an unexecutable command is received.
The bit is reset after the register is read.
Bit 1 ISE Internal communication error
Set when an internal communication error occurs.
The bit is reset after the register is read.
Bit 0 BDE Environment backup was damaged
Set when data stored in the device’s backup RAM is corrupted.
The bit is reset after the register is read.