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1.1 | 1 | ((( |
| 2 | = **PLC LX3V - Modbus programming Config** = | ||
| 3 | ))) | ||
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| 5 | (% style="color:#000000; font-family:Arial,sans-serif; font-size:13pt; font-style:normal; font-variant:normal; font-weight:700; text-decoration:none; white-space:pre-wrap" %)**การตั้งค่า Modbus Communication (RS-485)** | ||
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| 7 | (% style="line-height:1.38; margin-top:16px; margin-bottom:16px" %) | ||
| 8 | (% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)ตัวอย่างการตั้งค่าการสื่อสารผ่านพอร์ต COM2 (RS-485) สำหรับ PLC โดยใช้โหมด RTU พร้อมกำหนดค่าในโปรแกรม Ladder ดังนี้: | ||
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| 10 | * (% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant:normal; font-weight:700; text-decoration:none; white-space:pre-wrap" %)**Communication Format**(% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %): | ||
| 11 | ** (% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)Baud Rate: 19200(%%) | ||
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| 13 | ** (% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)Data Bits: 8(%%) | ||
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| 15 | ** (% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)Parity: None(%%) | ||
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| 17 | ** (% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)Stop Bit: 1(%%) | ||
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| 19 | ** (% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)Protocol: RTU(%%) | ||
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| 21 | * (% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant:normal; font-weight:700; text-decoration:none; white-space:pre-wrap" %)**Ladder Logic ตั้งค่าค่าเริ่มต้น:** | ||
| 22 | ** (% style="color:#188038; font-family:~"Roboto Mono~",monospace; font-size:11pt; font-style:normal; font-variant:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)MOV H91 → D8120(% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %) (ตั้งค่า Com Port)(%%) | ||
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| 24 | ** (% style="color:#188038; font-family:~"Roboto Mono~",monospace; font-size:11pt; font-style:normal; font-variant:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)MOV K1 → D8121(% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %) (กำหนด Station No. = 1)(%%) | ||
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| 26 | ** (% style="color:#188038; font-family:~"Roboto Mono~",monospace; font-size:11pt; font-style:normal; font-variant:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)MOV H2 → D8126(% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %) (ตั้งค่าโปรโตคอลเป็น RTU)(%%) | ||
| 27 | |||
| 28 | * (% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant:normal; font-weight:700; text-decoration:none; white-space:pre-wrap" %)**สถานะเริ่มต้น**(% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %): ใช้ (% style="color:#188038; font-family:~"Roboto Mono~",monospace; font-size:11pt; font-style:normal; font-variant:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)M8002(% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %) (First Scan Flag) เป็น Trigger(%%) | ||
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| 31 | (% style="line-height:1.38; margin-top:16px; margin-bottom:16px" %) | ||
| 32 | (% style="color:#000000; font-family:Arial,sans-serif; font-size:11pt; font-style:normal; font-variant:normal; font-weight:400; text-decoration:none; white-space:pre-wrap" %)เหมาะสำหรับการสื่อสารกับอุปกรณ์ Modbus RTU ผ่าน RS-485 ได้ทันทีโดยไม่ต้องเขียนโปรแกรมเพิ่มเติมมาก | ||
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