Panasonic FP2 ET-LAN Technical Manual page 249

[RT] Read the status of PLC
This reads information such as error codes if an error occurs in the programmable controller
specifications.
Model code
This expresses the CPU unit type as a 2-character decimal value.
Code Model
20 FP2 and FP2SH
Version
This expresses the CPU unit version as a 2-character decimal value.
For example: 15 → Ver. 1.5
Program capacity
This expresses the program capacity by specified by system register no.0 as a 2-character decimal
value. The value is expressed in k-step units.
Code Program capacity
02 2k steps
n n steps
16 16k steps
32 32k steps
Note) With the FP2SH, this will be "0".
Last step address
1,534
1,024 x n - 152 – 2
For example: If n = 8, the value is 7,678.
15,870
32,254
14-21