From d36bf4b1bb7870f0ee46f6cbd1cf40b2231f622c Mon Sep 17 00:00:00 2001
From: Kevin <k.batema@climotion.com>
Date: Mon, 25 Sep 2017 16:38:16 +0200
Subject: [PATCH] Added an errormap, so that errors can be easily found based
 on their ID

---
 message.go | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/message.go b/message.go
index 076c9d4..b9bb932 100644
--- a/message.go
+++ b/message.go
@@ -89,6 +89,22 @@ var (
 	GatewayTargetDeviceFailedToRespondError = Error{Code: 11, msg: "gateway target device failed to respond"}
 )
 
+// ErrorMap is a map where all the implemented Modbus errors are stored, which
+// their ID as the key. This makes is easy to ge the error based on the
+// errorcode
+var ErrorMap = map[int]Error{
+	1:  IllegalFunctionError,
+	2:  IllegalAddressError,
+	3:  IllegalDataValueError,
+	4:  SlaveDeviceFailureError,
+	5:  AcknowledgeError,
+	6:  SlaveDeviceBusyError,
+	7:  NegativeAcknowledgeError,
+	8:  MemoryParityError,
+	10: GatewayPathUnavailableError,
+	11: GatewayTargetDeviceFailedToRespondError,
+}
+
 // Value is a value an integer ranging from range of -32768 through 65535.
 type Value struct {
 	v int