6.1.2. SIU Systems

For proving the configuration of an SIU based system, follow the steps described in this section. This description assumes a single host system connected to a single SIU.

1. Check that your system.txt file on the host system contains all standard LOCAL module definitions and the following FORK_PROCESS commands:

        FORK_PROCESS   .\S7_LOG.EXE -m0xef 
        FORK_PROCESS   .\RSI.EXE -r.\RSI_LNK.EXE -l1  

2. Run GCTLOAD and power up the SIU.
3. Establish the TCP/IP link with the SIU using the following command (where <SIU_IP_Address> is the actual IP address assigned to the SIU):

        RSI_CMD 0 0xef 0 <SIU_IP_Address> 9000  

When the SIU is booted, you should see the following messages on the S7_LOG screen (where GCTLOAD is running):

        S7L:I00 RSI_MSG_LNK_STATUS : Link 0 now down 
        S7L:I00 RSI_MSG_LNK_STATUS : Link 0 now up  

The second message indicates that the host system is able to communicate with the SIU. If the link remains down, check that all LEDs on the SIU are lit. Also check the IP address of the SIU doing a ping to it. If not all the LEDs are lit before establishing the TCP/IP link, it may indicate a mistake in the configuration of the SIU (config.txt or system settings) or a hardware problem. See the DSC131/DSC231 User's Manual for more information on diagnosing and solving such problems.

Once the TCP/IP link between the host system and the SIU is established, the SIU will start activating its MTP links. Messages similar to the following ones should appear on the console:

        S7L:I00 Level 2 State : id=0 INITIAL ALIGNMENT 
        S7L:I00 Level 2 State : id=0 ALIGNED READY 
        S7L:I00 Level 2 State : id=0 IN SERVICE 
        S7L:I00 MTP Event : linkset_id/link_ref=0000 Changeback 
        S7L:I00 MTP Resume, dpc=00000001  

The last message indicates that the destination point code (00000001 in this example) is reachable. If you do not see this and the link is activated at the adjacent point code, check the config.txt file on the SIU. Start by checking the point codes, the Signaling Link Code (SLC) and Sub-Service Field (SSF) parameters.

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