From 9c921d8d4e29771f5a1a48f975a494c60611760a Mon Sep 17 00:00:00 2001
From: Andreas Karlsson <andreas.karlsson@rt-labs.com>
Date: Fri, 24 May 2019 14:05:53 +0200
Subject: [PATCH] Make ERROR slave count exceeded unique

---
 soem/ethercatconfig.c |  2 +-
 soem/ethercattype.h   | 10 ++++++----
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/soem/ethercatconfig.c b/soem/ethercatconfig.c
index 923ffbf..08a6ab0 100644
--- a/soem/ethercatconfig.c
+++ b/soem/ethercatconfig.c
@@ -142,7 +142,7 @@ int ecx_detect_slaves(ecx_contextt *context)
       {
          EC_PRINT("Error: too many slaves on network: num_slaves=%d, EC_MAXSLAVE=%d\n",
                wkc, EC_MAXSLAVE);
-         return -2;
+         return EC_SLAVECOUNTEXCEEDED;
       }
    }
    return wkc;
diff --git a/soem/ethercattype.h b/soem/ethercattype.h
index ba5b774..9dc2f84 100644
--- a/soem/ethercattype.h
+++ b/soem/ethercattype.h
@@ -37,12 +37,14 @@ extern "C"
 #   define EC_LITTLE_ENDIAN
 #endif
 
-/** return value general error */
-#define EC_ERROR           -3
 /** return value no frame returned */
-#define EC_NOFRAME         -1
+#define EC_NOFRAME            -1
 /** return value unknown frame received */
-#define EC_OTHERFRAME      -2
+#define EC_OTHERFRAME         -2
+/** return value general error */
+#define EC_ERROR              -3
+/** return value too many slaves */
+#define EC_SLAVECOUNTEXCEEDED -4
 /** maximum EtherCAT frame length in bytes */
 #define EC_MAXECATFRAME    1518
 /** maximum EtherCAT LRW frame length in bytes */