Modbus设备
格控TCP系列507E、508M、508D
1、IO端口多：508D有32个DI口、508M有24个DO口、507E有8个DI和8个DO口。
2、原生支持有线Modbus-TCP协议。
3、价格便宜，差评少。
4、支持二次开发：后期计划将普通设备逻辑写入里面，就可以脱离服务器。
5、产品相关资料 ：
准备
格控设备在说明书里详细的说明了设备的设置方式，
在此就不多加叙述（不同品牌的设置方式存在差异，均需详细参考说明书）。
1、给设备分配与你所在网段匹配的ip地址。
eg. 我的网段是192.168.0.X，我设置的508M：192.168.0.203、508D：192.168.0.202
2、使用附赠的测试软件，测试设备是否已正常连接。
3、node-red安装节点node-red-contrib-modbus。
node-red相关设置
1、在整个过程中主要使用modbus-flex-write、modbus-flex-getter两个节点。
2、modbus-flex-getter轮询：获取线圈或寄存器信息
3、配置服务端
4、 写入操作指令
5、串成流以后就如下所示
[
{
"id": "13aff178.470a47",
"type": "inject",
"z": "f570f583.ba8418",
"name": "",
"topic": "",
"payload": "",
"payloadType": "date",
"repeat": "0.2",
"crontab": "",
"once": true,
"onceDelay": "0",
"x": 180,
"y": 3160,
"wires": [
[
"ff699d5b.46a718"
]
]
},
{
"id": "ff699d5b.46a718",
"type": "function",
"z": "f570f583.ba8418",
"name": "Read 0-31 on Unit 1 FC2",
"func": "msg.payload = { value: msg.payload, 'fc': 2, 'unitid': 1, 'address': 0 , 'quantity': 32 };\nreturn msg;",
"outputs": 1,
"noerr": 0,
"x": 390,
"y": 3160,
"wires": [
[
"25928808.805ab"
]
]
},
{
"id": "25928808.805ab",
"type": "modbus-flex-getter",
"z": "f570f583.ba8418",
"name": "获取按键状态",
"showStatusActivities": false,
"showErrors": false,
"logIOActivities": false,
"server": "bc23592e.d784c8",
"useIOFile": false,
"ioFile": "",
"useIOForPayload": false,
"x": 620,
"y": 3160,
"wires": [
[
"aebee8cf.f142a8"
],
[]
]
},
{
"id": "efe7fdc6.38e45",
"type": "comment",
"z": "f570f583.ba8418",
"name": "定时轮询",
"info": "",
"x": 160,
"y": 3120,
"wires": []
},
{
"id": "e74381c4.affad8",
"type": "inject",
"z": "f570f583.ba8418",
"name": "start",
"topic": "",
"payload": "",
"payloadType": "date",
"repeat": "",
"crontab": "",
"once": true,
"onceDelay": "0",
"x": 170,
"y": 3280,
"wires": [
[
"25cb2616.ce8292"
]
]
},
{
"id": "25cb2616.ce8292",
"type": "function",
"z": "f570f583.ba8418",
"name": "Read 0-31 on Unit 1 FC2",
"func": "msg.payload = { value: msg.payload, 'fc': 2, 'unitid': 1, 'address': 0 , 'quantity': 32 };\nreturn msg;",
"outputs": 1,
"noerr": 0,
"x": 390,
"y": 3280,
"wires": [
[
"f3f8587.497f2a8"
]
]
},
{
"id": "f3f8587.497f2a8",
"type": "modbus-flex-getter",
"z": "f570f583.ba8418",
"name": "获取按键状态",
"showStatusActivities": false,
"showErrors": false,
"logIOActivities": false,
"server": "bc23592e.d784c8",
"useIOFile": false,
"ioFile": "",
"useIOForPayload": false,
"x": 620,
"y": 3280,
"wires": [
[
"4aba02be.620b74",
"a1768992.a4da3"
],
[]
]
},
{
"id": "beb6a924.cb22c",
"type": "comment",
"z": "f570f583.ba8418",
"name": "完整轮询",
"info": "",
"x": 160,
"y": 3240,
"wires": []
},
{
"id": "4aba02be.620b74",
"type": "delay",
"z": "f570f583.ba8418",
"name": "",
"pauseType": "delay",
"timeout": "5",
"timeoutUnits": "seconds",
"rate": "1",
"nbRateUnits": "1",
"rateUnits": "second",
"randomFirst": "1",
"randomLast": "5",
"randomUnits": "seconds",
"drop": false,
"x": 460,
"y": 3380,
"wires": [
[
"25cb2616.ce8292"
]
]
},
{
"id": "aebee8cf.f142a8",
"type": "debug",
"z": "f570f583.ba8418",
"name": "",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": false,
"complete": "false",
"x": 830,
"y": 3160,
"wires": []
},
{
"id": "a1768992.a4da3",
"type": "debug",
"z": "f570f583.ba8418",
"name": "",
"active": true,
"tosidebar": true,
"console": false,
"tostatus": false,
"complete": "false",
"x": 830,
"y": 3280,
"wires": []
},
{
"id": "bc23592e.d784c8",
"type": "modbus-client",
"z": "",
"name": "",
"clienttype": "tcp",
"bufferCommands": true,
"stateLogEnabled": false,
"tcpHost": "192.168.0.203",
"tcpPort": "502",
"tcpType": "DEFAULT",
"serialPort": "/dev/ttyUSB",
"serialType": "RTU-BUFFERD",
"serialBaudrate": "9600",
"serialDatabits": "8",
"serialStopbits": "1",
"serialParity": "none",
"serialConnectionDelay": "100",
"unit_id": "1",
"commandDelay": "1",
"clientTimeout": "1000",
"reconnectOnTimeout": true,
"reconnectTimeout": "2000",
"parallelUnitIdsAllowed": true
}]
6、改变设备状态就更简单了
你这个依赖了nodered吧,nodered挂了就瞎灯黑火了吧