modbus-getter flow for ENOMEM test

[{
	"id": "4b69ebbb.ef6144",
	"type": "modbus-getter",
	"z": "a0a135f0.1c2668",
	"name": "Hz",
	"showStatusActivities": true,
	"showErrors": true,
	"unitid": "1",
	"dataType": "HoldingRegister",
	"adr": "272",
	"quantity": "2",
	"server": "2984ebcd.e9d664",
	"x": 402,
	"y": 371,
	"wires": [
		[],
		[]
	]
}, {
	"id": "3d070292.7bf66e",
	"type": "modbus-getter",
	"z": "a0a135f0.1c2668",
	"name": "Volt & Amp",
	"showStatusActivities": true,
	"showErrors": true,
	"unitid": "1",
	"dataType": "HoldingRegister",
	"adr": "0",
	"quantity": "50",
	"server": "2984ebcd.e9d664",
	"x": 402,
	"y": 179,
	"wires": [
		["91dddf04.b0472"],
		[]
	]
}, {
	"id": "91dddf04.b0472",
	"type": "modbus-getter",
	"z": "a0a135f0.1c2668",
	"name": "kwh",
	"showStatusActivities": true,
	"showErrors": true,
	"unitid": "1",
	"dataType": "HoldingRegister",
	"adr": "52",
	"quantity": "50",
	"server": "2984ebcd.e9d664",
	"x": 402,
	"y": 279,
	"wires": [
		["4b69ebbb.ef6144"],
		[]
	]
}, {
	"id": "b462160b.4b37c8",
	"type": "inject",
	"z": "a0a135f0.1c2668",
	"name": "1sec",
	"topic": "",
	"payload": "",
	"payloadType": "date",
	"repeat": "1",
	"crontab": "",
	"once": false,
	"x": 242,
	"y": 179,
	"wires": [
		["3d070292.7bf66e"]
	]
}, {
	"id": "749e7a2c.da9d74",
	"type": "modbus-queue-info",
	"z": "a0a135f0.1c2668",
	"name": "",
	"unitid": "1",
	"lowLowLevel": 25,
	"lowLevel": 75,
	"highLevel": 150,
	"highHighLevel": 300,
	"server": "2984ebcd.e9d664",
	"errorOnHighLevel": true,
	"x": 373.5,
	"y": 443,
	"wires": [
		[]
	]
}, {
	"id": "2984ebcd.e9d664",
	"type": "modbus-client",
	"z": "",
	"name": "UART-RS485 (EM430)",
	"clienttype": "serial",
	"bufferCommands": true,
	"stateLogEnabled": false,
	"tcpHost": "127.0.0.1",
	"tcpPort": "502",
	"tcpType": "DEFAULT",
	"serialPort": "/dev/ttyS0",
	"serialType": "RTU-BUFFERD",
	"serialBaudrate": "9600",
	"serialDatabits": "8",
	"serialStopbits": "1",
	"serialParity": "none",
	"serialConnectionDelay": "100",
	"unit_id": 1,
	"commandDelay": 1,
	"clientTimeout": 1000,
	"reconnectTimeout": 2000
}]