diff --git a/lib/protocol/READ_WRITE_MULTIPLE_REGISTERS.js b/lib/protocol/READ_WRITE_MULTIPLE_REGISTERS.js
index <HASH>..<HASH> 100644
--- a/lib/protocol/READ_WRITE_MULTIPLE_REGISTERS.js
+++ b/lib/protocol/READ_WRITE_MULTIPLE_REGISTERS.js
@@ -1,7 +1,7 @@
 var Helpers = require("../Helpers");
 var Buff    = require("../Buffer");
 
-exports.code = 0x10;
+exports.code = 0x17;
 
 exports.buildRequest = function (read_address, read_quantity, write_address, values) {
 	var buffer = Buff.alloc(9 + (values.length * 2));
fixes function code for read-write-multiple-registers :(