Read/write function block data
For more information visit: www.EatonElectrical.comMN05013001E 79
Operating hours counters: O1 – O4
Telegram structure
Table 30: Operand overview
Byte Meaning Value (hex), sent by
Master Slave
0 Toggle byte Jpage44
1Command:
Read 89 –
Write 8D –
Response:
Read successful –C2
Write successful –C1
Command rejected –C01
2Type 92 92
3Instance
200 – 03 00 – 03
4 Index JTable30
5 – 8 Data 1 – 4 depending on index, JTable31
1) Possible causes Jpage91
2) EZ provides 4 operating hours counters O1 to O4. These can be
addressed using the instance (0 – 3).
Index
(hex) Operand Read Write
00 Parameters JTable31 ×
01 Control byteJTable 32 ×
02 Actual value S12×c1
03 Counter setpoint 2 S22×c1
1) The value can only be written if it is assigned to a constant in the
program.
2) A 32-bit value is transferred in data bytes Data 1 –Data 4. It should be
remembered that the Data 1 is the low byte and Data 4 the high byte.