Omron CQM1H-SCB41 Operation Manual page 259

E5@J Temperature Controller Protocol
Note The completion code is not included in the read data.
244
Offset Contents (data format)
+0 Number of receive data words
(4 digits BCD)
+1 Read data (4 digits BCD)
Appendix G
Data
0002
0000 to 9999
When the left digit is –1, A is set and when
it is –, F is set.