From 915253f87d4ef04d886bebb50135d75082ae0eee Mon Sep 17 00:00:00 2001
From: zhangqian <zhangqian@123.com>
Date: 星期五, 15 九月 2023 13:37:22 +0800
Subject: [PATCH] 换一种方式检查plc连接
---
service/plc.go | 20 +++++++++++++++-----
1 files changed, 15 insertions(+), 5 deletions(-)
diff --git a/service/plc.go b/service/plc.go
index 0e5e49f..48292b2 100644
--- a/service/plc.go
+++ b/service/plc.go
@@ -145,12 +145,13 @@
return
}
-func PlcReadDirect(plcConfig *model.DevicePlc, address int, dataLength int) (val interface{}, err error) {
+func PlcReadDirect(plcConfig *model.DevicePlc, address int, dataLength int, valueType constvar.PlcStartAddressValueType) (val interface{}, err error) {
var (
ipAddr string
)
if plcConfig.CurrentTryTimes > plcConfig.MaxTryTimes {
+ logx.Errorf("plc read try time beyond max try times, err:%v", plcConfig.CurrentErr)
return nil, plcConfig.CurrentErr
}
plcConfig.CurrentTryTimes++
@@ -158,15 +159,24 @@
ipAddr = fmt.Sprintf("%s:%v", plcConfig.Address, plcConfig.Port)
conn, err := plc.GetModbusConnection(ipAddr)
if err != nil {
- logx.Errorf("plc write failed, 杩炴帴plc澶辫触: %v", err.Error())
plcConfig.CurrentErr = err
- return PlcReadDirect(plcConfig, address, dataLength)
+ return PlcReadDirect(plcConfig, address, dataLength, valueType)
}
value, err := plc.ReadHoldingRegister(conn, address, dataLength)
if err != nil {
- logx.Errorf("plc read failed, address: %v, err: %v", address, err.Error())
plcConfig.CurrentErr = err
- return PlcReadDirect(plcConfig, address, dataLength)
+ return PlcReadDirect(plcConfig, address, dataLength, valueType)
+ }
+ switch valueType {
+ case constvar.PlcStartAddressValueTypeString:
+ return string(value), nil
+ case constvar.PlcStartAddressValueTypeInt:
+ if len(value) == 2 {
+ return int(binary.BigEndian.Uint16(value)), nil
+ } else {
+ logx.Errorf("plc read get an unknown int value: %v, address:%v", value, address)
+ return nil, errors.New(fmt.Sprintf("unknown int value锛�%v", value))
+ }
}
logx.Infof("plc read ok, address: %v, result: %v", address, value)
} else if plcConfig.Method == constvar.PlcMethodSerial {
--
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