diff --git a/hgdriver/hgdev/hg_scanner.cpp b/hgdriver/hgdev/hg_scanner.cpp
index 5fc18ca..6f246b2 100644
--- a/hgdriver/hgdev/hg_scanner.cpp
+++ b/hgdriver/hgdev/hg_scanner.cpp
@@ -3348,6 +3348,13 @@ int hg_scanner::device_io_control(unsigned long code, void* data, unsigned* len)
 	{
 		return clean_paper_road();
 	}
+	else if (code == IO_CTRL_CODE_GET_SCANN_NUM)
+	{
+		int num = 0;
+		int ret = get_roller_num(num);
+		(*(int*)data) = num;
+		return ret;
+	}
 	return SCANNER_ERR_DEVICE_NOT_SUPPORT;
 }
 std::string hg_scanner::get_firmware_version(void)