7 Application Instructions API 50-99 API 75 Operands: S : Start device for key input D 1 : Device to be displayed in 7-segment display D 2 : Start device for 7-segment display scan output n : Polarity setting of output signal and scan signal Explanations: 1. S will occupy 4 consecutive points. 2. Range of n : 0 ~ 3. See remarks of API 74 SEGL for more details. 3. There no limitation on the times of using this instruction in the program. However, only one instruction is allowed to be executed at a time. 4. S and D 2 of SA series MPU do not support E, F index register modification, and D 2 can only designate the devices whose last digit is 0 (e.g. Y0, Y10….) 5.
See the specifications of each model for their range of use. 6. The output points designated by this instruction shall be transistor output. 7. When using this instruction, please fix the scan time, or place this instruction in the time interruption subroutine (I6 □□ ~ I8 □□ ). Program Example: 1. When this instruction is executed, X20 is defined as down key, X21 is defined as up key, X22 is defined as right key and X23 is defined as left key. The keys are used for setting up and displaying external set values. The set values (range: 0 ~ 9,999) are stored in D20. 2. When X10 = On, digit 10 3 will be the valid digit for setup.
If you press the left key at this time, the valid digit will circulate as 10 3 → 10 0 → 10 1 → 10 2 → 10 3 → 10 0 . 3. If you press the right key at this time, the valid digit will circulate as 10 3 → 10 2 → 10 1 → 10 0 → 10 3 → 10 2 . During the circulation, the digit indicators connected Y24 ~ Y27 will also be On interchangeably following the circulation. 4. If you press the up key at this time, the valid digit will change as 0 → 1 → 2 … → 8 → 9 → 0 → 1. If you press the down key, the valid digit will change as 0 → 9 → 8 … → 1 → 0 → 9. The changed value will also be displayed in the 7-segment display.
X10 DVP-PLC APPLICATION MANUAL 7-86 Mnemonic Operands Function ARWS Arrow Switch Type OP Bit Devices Word Devices Program Steps X Y M S K H KnX KnY KnM KnS T C D E F ARWS: 9 steps S * * * * D 1 * * * * * D 2 * n * * PULSE 16-bit 32-bit SA SX SC EH SV EH3 SV2 ES EX SS EH3 ES EX SS SA SX SC EH SV EH3 SV2 ES EX SS SA SX SC EH SV SV2 ARWS X20 D20 Y20 K0