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--- uphp:library_functions:modbus [2021/04/09 08:55]
admin created
+++ uphp:library_functions:modbus [2021/09/13 05:57] (current)
@@ Line 5: / Line 5: @@
 The Modbus include library contains functions and defines as shown below.
-Usage:
+**Usage:**
 <html><pre>include("/lib/uphp/modbus.inc");</pre></html>
+**Source:**
+[[modbus.inc|View Source]]
+===== Defines =====
+^DEFINE^VALUE^
+|MB_ILLEGAL_FUNCTION|-1|
+|MB_ILLEGAL_ADDRESS|-2|
+|MB_ILLEGAL_VALUE|-3|
+|MB_SLAVE_FAILURE|-4|
+===== Functions =====
 Click on the function name for further details:
@@ Line 19: / Line 33: @@
 |[[mb_set_uint32_be_0x10]]|<html><span style="color:green">int<span style="color:blue"> id, <span style="color:green">int<span style="color:blue"> bus, <span style="color:green">int<span style="color:blue"> reg, <span style="color:green">int<span style="color:black"> val, <span style="color:green">int<span style="color:blue"> retries</html>|<html><span style="color:green">int<span style="color:blue"></html>|[[modbus]]|Set a modbus UINT32 in big endian using function 10h|
 |[[mb_set_uint32_le_0x10]]|<html><span style="color:green">int<span style="color:blue"> id, <span style="color:green">int<span style="color:blue"> bus, <span style="color:green">int<span style="color:blue"> reg, <span style="color:green">int<span style="color:black"> val, <span style="color:green">int<span style="color:blue"> retries</html>|<html><span style="color:green">int<span style="color:blue"></html>|[[modbus]]|Set a modbus UINT32 in little endian using function 10h|
+===== Example =====
+<code php>
+<pre><?
+// assume a modbus TCP connection on ID 1 on Channel 2
+$DEBUG=1;
+include("/lib/uphp/modbus.inc");
+$id=1;
+$bus=2;
+$reg=1;
+$cmd=100;
+$retries=1;
+$res=mb_set_int16_0x03($id, $bus, $reg, $cmd, $retries);
+print("\r\nSet INT 16 func 03 result is : ".$res." ".mb_get_error_string($res));
+$reg++;
+$res=mb_set_int16_0x10($id, $bus, $reg, $cmd, $retries);
+print("\r\nSet INT 16 func 10 result is : ".$res." ".mb_get_error_string($res));
+$reg+=2;
+$res=mb_set_uint32_le_0x10($id, $bus, $reg, $cmd, $retries);
+print("\r\mb_set_uint32_le_0x10 result is : ".$res." ".mb_get_error_string($res));
+$reg+=2;
+$res=mb_set_uint32_be_0x10($id, $bus, $reg, $cmd, $retries);
+print("\r\mb_set_uint32_be_0x10 result is : ".$res." ".mb_get_error_string($res));
+$reg+=2;
+$res=mb_set_float_le_0x10($id, $bus, $reg, $cmd, $retries);
+print("\r\mb_set_float_le_0x10 result is : ".$res." ".mb_get_error_string($res));
+$reg+=2;
+$res=mb_set_float_be_0x10($id, $bus, $reg, $cmd, $retries);
+print("\r\mb_set_float_be_0x10 result is : ".$res." ".mb_get_error_string($res));
+?></pre>
+</code>

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