| Item | Q02PHCPU | Q06PHCPU | Q12PHCPU | Q25PHCPU |
| Control method | Stored program cyclic operation |
| I/O control mode | Refresh |
| Sequence control language | • Relay symbol language (ladder)• Logic symbolic language (list)
• MELSAP3 (SFC), MELSAP-L • Function block • Structured text (ST) |
| Process controllanguage | • Process control FBD*1 |
| Peripheralconnection port USB | |
| Peripheralconnection port RS-232 | |
| Memory card interface | (SRAM card, Flash card, ATA card) |
| LD instruction | 34 ns |
| MOV instruction | 102 ns |
| PC MIX value(instruction/µs)*3 | 10.3 |
| Floating point addition | 0.78 µs |
| Total number of instructions*4 | 757 |
| Floating point instruction | |
| Character string processing instruction | |
| PID instruction | — |
| Process control instruction | |
| Special function instruction (Trigonometric function, square root,exponential operation, etc.) | |
| Constant scan(Function for keeping regular scan time) | 0.5…2000 ms (setting available in units of 0.5 ms) |
| Program capacity | 28K steps | 60K steps | 124K steps | 252K steps |
| Number of I/O device points [X/Y] | 8192 points |
| Number of I/O points [X/Y] | 4096 points |
| Internal relay [M]*5 | 8192 points |
| Latch relay [L]*5 | 8192 points |
| Link relay [B]*5 | 8192 points |
| Timer [T]*5 | 2048 points |
| Retentive timer [ST]*5 | 0 point |
| Counter [C]*5 | 1024 points |
| Data register [D]*5 | 12288 points |
| Link register [W]*5 | 8192 points |
| Annunciator [F]*5 | 2048 points |
| Edge relay [V]*5 | 2048 points |
| Link special relay [SB] | 2048 points |
| Link special register [SW] | 2048 points |
| File register [R, ZR] | 65536 points*6 | 131072 points*6 |
| Step relay [S] | 8192 points |
| Index register [Z] | 16 points |
| Pointer [P] | 4096 points |
| Interrupt pointer [I] | 256 points |
| Special relay [SM] | 2048 points |
| Special register [SD] | 2048 points |
| Function input [FX] | 16 points |
| Function output [FY] | 16 points |
| Function register [FD] | 5 points |
| Local device | |
| Device initial values | |
