User Guide
15
SerialOpenFormat parameter
This parameter defines not only the data format but with the SDM-SIO1 is used to
set whether the module should work in normal RS-232, listen only RS-232, full or
half-duplex RS-485 modes as defined in the tables below.
Table 4-1. Communications port parameters RS-232
Code
Parity
No. stop bits
No. data bits
0
None
1
8
1
Odd
1
8
2
Even
1
8
3 (default)
None
1
8
4
Not used
5
Odd
2
8
6
Even
2
8
7
None
2
8
8
Not used
9
Odd
1
7
10
Even
1
7
11
(1)
None
1
7
12
Not used
13
Odd
2
7
14
Even
2
7
15
None
2
7
(1) This mode is only supported if there is at least a one bit delay between
characters received by the SDM-SIO1
Table 4-2. Communications port parameters RS-485 full duplex
Code
Parity
No. stop bits
No. data bits
16
None
1
8
17
Odd
1
8
18
Even
1
8
19
None
1
8
20
Not used
21
Odd
2
8
22
Even
2
8
23
None
2
8
24
Not used
25
Odd
1
7
26
Even
1
7
27
(1)
None
1
7
28
Not used
29
Odd
2
7
30
Even
2
7
31
None
2
7
(1) This mode is only supported if there is at least a one bit delay between
characters received by the SDM-SIO1
