From 583142e22b647955082ea61f8ee6b3641aaa903c Mon Sep 17 00:00:00 2001
From: zhangqian <zhangqian@123.com>
Date: 星期二, 19 九月 2023 14:16:55 +0800
Subject: [PATCH] 写plc fix
---
pkg/plc/modbusx/modbus.go | 35 +++++++++++------------------------
1 files changed, 11 insertions(+), 24 deletions(-)
diff --git a/pkg/plc/modbusx/modbus.go b/pkg/plc/modbusx/modbus.go
index e1af28c..2d323ec 100644
--- a/pkg/plc/modbusx/modbus.go
+++ b/pkg/plc/modbusx/modbus.go
@@ -19,37 +19,24 @@
}
func Write(ipAddr string, address uint16, value int) (err error) {
+ address--
var bytesVal []byte
- if value <= 1<<16 {
- uint16ToBytes(uint16(value))
- } else {
- bytesVal = intToBytes(value)
- }
+ bytesVal = intToBytes(value)
cli := getModbusConnection(ipAddr)
_, err = cli.WriteMultipleRegisters(address, uint16(len(bytesVal)), bytesVal)
dealErr(err, ipAddr)
return err
}
-func uint16ToBytes(value uint16) []byte {
- // 鍒涘缓涓�涓暱搴︿负2鐨勫瓧鑺傚垏鐗�
- bytes := make([]byte, 2)
-
- // 灏� uint16 鐨勫�煎啓鍏ュ瓧鑺傚垏鐗囷紝鍙互閫夋嫨浣跨敤澶х鎴栧皬绔瓧鑺傚簭
- bytes[0] = byte(value >> 8) // 鑾峰彇楂�8浣�
- bytes[1] = byte(value) // 鑾峰彇浣�8浣�
-
- return bytes
-}
-
-func intToBytes(value int) []byte {
- // 鍒涘缓涓�涓暱搴︿负4鐨勫瓧鑺傚垏鐗囷紝鐢ㄤ簬瀛樺偍 int 鍊�
- bytes := make([]byte, 4)
-
- // 浣跨敤 binary 鍖呭皢 int 鍊艰浆鎹负瀛楄妭鍒囩墖
- binary.BigEndian.PutUint32(bytes, uint32(value))
-
- return bytes
+func intToBytes(value int) (data []byte) {
+ if value <= 1<<16 {
+ data = make([]byte, 2)
+ binary.BigEndian.PutUint16(data, uint16(value))
+ } else {
+ data = make([]byte, 4)
+ binary.BigEndian.PutUint32(data, uint32(value))
+ }
+ return
}
func dealErr(err error, ipAddr string) {
--
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