Vertical IP8024 Installation Guide Page 137

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Precaution 9-3
Chapter 9: Hotel - Property Management System (PMS)
MBX IP Hardware & Installation Guide
Precaution
1. Usually, the LAN connected to the system should be separated from the Intranet in order
to operate the system in a more stable manner.
2. If hotel service type is front desk, hotel PMS-related information can be programmed
through the personal web and the changed information is sent to the PMS.
3. To remove any overload in the system due to the messages from the PMS, PMS should
send a message at the minimum interval of 200ms.
PMS Connection Spec
1. LAN connection system spec:
10/100 Base-T Ethernet
2. Server/Client:
MBX IP acts as a server and the PMS program as a client.
3. Logic Connection Port
(Tx/Rx is used from the system's point of view.)
SMDA1 (LAN1) - 6016(Tx), 6018(Rx)
SMDA2 (LAN2) - 6017(Tx), 6019(Rx)
4. Flow control
In case there are multiple messages to send, the TX side should send each message one
by one. After one message is sent, it must wait for the Answer message to be received.
Answer message can be ACK or NAK. If an ACK message is received, the TX side can
send the next message. But if a NAK message is received or there is a no Answer
message for 7 seconds, the TX side should retransmit the message. The TX side retries 4
times for the unanswered message. If the retry count overflows, the current connection is
closed and a new connection should be re-established.
Release 1.7
April 2012
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